25711636552 has 32 divisors (see below), whose sum is σ = 56585459520. Its totient is φ = 10721453760.

The previous prime is 25711636547. The next prime is 25711636571. The reversal of 25711636552 is 25563611752.

It is a super-2 number, since 2×25711636552² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25711636499 and 25711636508.

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, 6202474 + ... + 6206617.

It is an arithmetic number, because the mean of its divisors is an integer number (1768295610).

Almost surely, 2^25711636552 is an apocalyptic number.

It is an amenable number.

25711636552 is an abundant number, since it is smaller than the sum of its proper divisors (30873822968).

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

25711636552 is a wasteful number, since it uses less digits than its factorization.

25711636552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12409141 (or 12409137 counting only the distinct ones).

The product of its digits is 378000, while the sum is 43.

The spelling of 25711636552 in words is "twenty-five billion, seven hundred eleven million, six hundred thirty-six thousand, five hundred fifty-two".