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4086025 = 521371193
BaseRepresentation
bin1111100101100100001001
321200120222021
433211210021
52021223100
6223324441
746505416
oct17454411
97616867
104086025
112340989
121450721
13b00a88
1478510d
1555aa1a
hex3e5909

4086025 has 12 divisors (see below), whose sum is σ = 5107932. Its totient is φ = 3242240.

The previous prime is 4086023. The next prime is 4086031. The reversal of 4086025 is 5206804.

4086025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 33856 + 4052169 = 184^2 + 2013^2 .

It is not a de Polignac number, because 4086025 - 21 = 4086023 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4086023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2829 + ... + 4021.

It is an arithmetic number, because the mean of its divisors is an integer number (425661).

Almost surely, 24086025 is an apocalyptic number.

It is an amenable number.

4086025 is a deficient number, since it is larger than the sum of its proper divisors (1021907).

4086025 is a wasteful number, since it uses less digits than its factorization.

4086025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340 (or 1335 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 4086025 is about 2021.3918472181. The cubic root of 4086025 is about 159.8700116100.

The spelling of 4086025 in words is "four million, eighty-six thousand, twenty-five".

Divisors: 1 5 25 137 685 1193 3425 5965 29825 163441 817205 4086025