25172587552 has 24 divisors (see below), whose sum is σ = 56638322496. Its totient is φ = 10788251712.

The previous prime is 25172587541. The next prime is 25172587679. The reversal of 25172587552 is 25578527152.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 25172587496 and 25172587505.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56188588 + ... + 56189035.

It is an arithmetic number, because the mean of its divisors is an integer number (2359930104).

Almost surely, 2^25172587552 is an apocalyptic number.

It is an amenable number.

25172587552 is an abundant number, since it is smaller than the sum of its proper divisors (31465734944).

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

25172587552 is a wasteful number, since it uses less digits than its factorization.

25172587552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112377640 (or 112377632 counting only the distinct ones).

The product of its digits is 1960000, while the sum is 49.

The spelling of 25172587552 in words is "twenty-five billion, one hundred seventy-two million, five hundred eighty-seven thousand, five hundred fifty-two".