25040440452 has 24 divisors (see below), whose sum is σ = 58438703232. Its totient is φ = 8345240800.

The previous prime is 25040440429. The next prime is 25040440489. The reversal of 25040440452 is 25404404052.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129324 + ... + 258467.

It is an arithmetic number, because the mean of its divisors is an integer number (2434945968).

Almost surely, 2^25040440452 is an apocalyptic number.

It is an amenable number.

25040440452 is an abundant number, since it is smaller than the sum of its proper divisors (33398262780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25040440452 is a wasteful number, since it uses less digits than its factorization.

25040440452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393179 (or 393177 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 30.

The spelling of 25040440452 in words is "twenty-five billion, forty million, four hundred forty thousand, four hundred fifty-two".