25557624852 has 12 divisors (see below), whose sum is σ = 59634458016. Its totient is φ = 8519208280.

The previous prime is 25557624847. The next prime is 25557624857. The reversal of 25557624852 is 25842675552.

It is an interprime number because it is at equal distance from previous prime (25557624847) and next prime (25557624857).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 25557624795 and 25557624804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25557624857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1064901024 + ... + 1064901047.

It is an arithmetic number, because the mean of its divisors is an integer number (4969538168).

Almost surely, 2^25557624852 is an apocalyptic number.

It is an amenable number.

25557624852 is an abundant number, since it is smaller than the sum of its proper divisors (34076833164).

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

25557624852 is a wasteful number, since it uses less digits than its factorization.

25557624852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2129802078 (or 2129802076 counting only the distinct ones).

The product of its digits is 6720000, while the sum is 51.

The spelling of 25557624852 in words is "twenty-five billion, five hundred fifty-seven million, six hundred twenty-four thousand, eight hundred fifty-two".