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25300401023 = 78857320839
BaseRepresentation
bin10111100100000001…
…010111101101111111
32102022020011112112202
4113210001113231333
5403303400313043
615342311222115
71553652601052
oct274401275577
972266145482
1025300401023
11a803464837
124aa107793b
1325028449c1
141320222a99
159d12601b8
hex5e4057b7f

25300401023 has 4 divisors (see below), whose sum is σ = 25300800720. Its totient is φ = 25300001328.

The previous prime is 25300401013. The next prime is 25300401029. The reversal of 25300401023 is 32010400352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25300401023 - 218 = 25300138879 is a prime.

It is a super-2 number, since 2×253004010232 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25300400986 and 25300401004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25300401029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81563 + ... + 239276.

It is an arithmetic number, because the mean of its divisors is an integer number (6325200180).

Almost surely, 225300401023 is an apocalyptic number.

25300401023 is a deficient number, since it is larger than the sum of its proper divisors (399697).

25300401023 is an equidigital number, since it uses as much as digits as its factorization.

25300401023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399696.

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 25300401023 its reverse (32010400352), we get a palindrome (57310801375).

The spelling of 25300401023 in words is "twenty-five billion, three hundred million, four hundred one thousand, twenty-three".

Divisors: 1 78857 320839 25300401023