25561016552 has 32 divisors (see below), whose sum is σ = 48967113600. Its totient is φ = 12503347584.

The previous prime is 25561016513. The next prime is 25561016561.

25561016552 is nontrivially palindromic in base 10.

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, 977099 + ... + 1002917.

It is an arithmetic number, because the mean of its divisors is an integer number (1530222300).

Almost surely, 2^25561016552 is an apocalyptic number.

It is an amenable number.

25561016552 is a deficient number, since it is larger than the sum of its proper divisors (23406097048).

25561016552 is a wasteful number, since it uses less digits than its factorization.

25561016552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28505 (or 28501 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 38.

The spelling of 25561016552 in words is "twenty-five billion, five hundred sixty-one million, sixteen thousand, five hundred fifty-two".