25440655604452 has 24 divisors (see below), whose sum is σ = 49049400822912. Its totient is φ = 11449439964000.

The previous prime is 25440655604443. The next prime is 25440655604479.

25440655604452 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 25440655604452.

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, 2862355548 + ... + 2862364435.

It is an arithmetic number, because the mean of its divisors is an integer number (2043725034288).

Almost surely, 2^{25440655604452} is an apocalyptic number.

25440655604452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25440655604452 is a deficient number, since it is larger than the sum of its proper divisors (23608745218460).

25440655604452 is a wasteful number, since it uses less digits than its factorization.

25440655604452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5724720099 (or 5724720097 counting only the distinct ones).

The product of its (nonzero) digits is 23040000, while the sum is 52.

The spelling of 25440655604452 in words is "twenty-five trillion, four hundred forty billion, six hundred fifty-five million, six hundred four thousand, four hundred fifty-two".