25557583325 has 12 divisors (see below), whose sum is σ = 33069291168. Its totient is φ = 19557106800.

The previous prime is 25557583283. The next prime is 25557583351. The reversal of 25557583325 is 52338575552.

It is a de Polignac number, because none of the positive numbers 2^k-25557583325 is a prime.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22223411 + ... + 22224560.

It is an arithmetic number, because the mean of its divisors is an integer number (2755774264).

Almost surely, 2^25557583325 is an apocalyptic number.

25557583325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25557583325 is a deficient number, since it is larger than the sum of its proper divisors (7511707843).

25557583325 is a wasteful number, since it uses less digits than its factorization.

25557583325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44448004 (or 44447999 counting only the distinct ones).

The product of its digits is 6300000, while the sum is 50.

The spelling of 25557583325 in words is "twenty-five billion, five hundred fifty-seven million, five hundred eighty-three thousand, three hundred twenty-five".