Search a number
-
+
38025000025 = 52411132331409
BaseRepresentation
bin100011011010011101…
…110111010001011001
310122011000202010212021
4203122131313101121
51110333400000100
625245103414441
72514203111245
oct433235672131
9118130663767
1038025000025
1115143137361
1274525b4421
13377cb4c41c
141baa17d425
15ec8411a1a
hex8da777459

38025000025 has 48 divisors (see below), whose sum is σ = 48972334320. Its totient is φ = 29268377600.

The previous prime is 38025000017. The next prime is 38025000031. The reversal of 38025000025 is 52000052083.

It can be written as a sum of positive squares in 24 ways, for example, as 30537213001 + 7487787024 = 174749^2 + 86532^2 .

It is not a de Polignac number, because 38025000025 - 23 = 38025000017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26986521 + ... + 26987929.

It is an arithmetic number, because the mean of its divisors is an integer number (1020256965).

Almost surely, 238025000025 is an apocalyptic number.

38025000025 is the 159217-th pentagonal number.

It is an amenable number.

38025000025 is a deficient number, since it is larger than the sum of its proper divisors (10947334295).

38025000025 is a wasteful number, since it uses less digits than its factorization.

38025000025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806 (or 1801 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Subtracting from 38025000025 its sum of digits (25), we obtain a square (38025000000 = 1950002).

It can be divided in two parts, 380250000 and 25, that multiplied together give a square (9506250000 = 975002).

The spelling of 38025000025 in words is "thirty-eight billion, twenty-five million, twenty-five", and thus it is an aban number and an uban number.

Divisors: 1 5 25 41 113 205 233 565 1025 1165 1409 2825 4633 5825 7045 9553 23165 26329 35225 47765 57769 115825 131645 159217 238825 288845 328297 658225 796085 1079489 1444225 1641485 3980425 5397445 6527897 8207425 13460177 26987225 32639485 37097561 67300885 163197425 185487805 336504425 927439025 1521000001 7605000005 38025000025