25032721325 has 12 divisors (see below), whose sum is σ = 31042576020. Its totient is φ = 20024885760.

The previous prime is 25032721321. The next prime is 25032721387. The reversal of 25032721325 is 52312723052.

It can be written as a sum of positive squares in 6 ways, for example, as 617721316 + 24415000009 = 24854^2 + 156253^2 .

It is not a de Polignac number, because 25032721325 - 2² = 25032721321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25032721291 and 25032721300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25032721321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 627887 + ... + 666563.

It is an arithmetic number, because the mean of its divisors is an integer number (2586881335).

Almost surely, 2^25032721325 is an apocalyptic number.

25032721325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25032721325 is a deficient number, since it is larger than the sum of its proper divisors (6009854695).

25032721325 is a wasteful number, since it uses less digits than its factorization.

25032721325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64576 (or 64571 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 32.

The spelling of 25032721325 in words is "twenty-five billion, thirty-two million, seven hundred twenty-one thousand, three hundred twenty-five".