25456253522 has 54 divisors (see below), whose sum is σ = 45252335511. Its totient is φ = 10708779480.

The previous prime is 25456253497. The next prime is 25456253527. The reversal of 25456253522 is 22535265452.

It can be written as a sum of positive squares in only one way, i.e., 12728126761 + 12728126761 = 112819^2 + 112819^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=112819.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25456253522.

It is not an unprimeable number, because it can be changed into a prime (25456253527) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 112141973 + ... + 112142199.

Almost surely, 2^25456253522 is an apocalyptic number.

25456253522 is a deficient number, since it is larger than the sum of its proper divisors (19796081989).

25456253522 is an frugal number, since it uses more digits than its factorization.

25456253522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 307 counting only the distinct ones).

The product of its digits is 720000, while the sum is 41.

The spelling of 25456253522 in words is "twenty-five billion, four hundred fifty-six million, two hundred fifty-three thousand, five hundred twenty-two".