25409628640325 has 12 divisors (see below), whose sum is σ = 31607333654820. Its totient is φ = 20263577660160.

The previous prime is 25409628640301. The next prime is 25409628640337. The reversal of 25409628640325 is 52304682690452.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1240035917761 + 24169592722564 = 1113569^2 + 4916258^2 .

It is not a de Polignac number, because 25409628640325 - 2¹⁴ = 25409628623941 is a prime.

It is a super-2 number, since 2×25409628640325² (a number of 28 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1603123220 + ... + 1603139069.

It is an arithmetic number, because the mean of its divisors is an integer number (2633944471235).

Almost surely, 2^{25409628640325} is an apocalyptic number.

25409628640325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25409628640325 is a deficient number, since it is larger than the sum of its proper divisors (6197705014495).

25409628640325 is a wasteful number, since it uses less digits than its factorization.

25409628640325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3206262616 (or 3206262611 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 56.

The spelling of 25409628640325 in words is "twenty-five trillion, four hundred nine billion, six hundred twenty-eight million, six hundred forty thousand, three hundred twenty-five".