25711636652 has 24 divisors (see below), whose sum is σ = 48611390016. Its totient is φ = 11828988288.

The previous prime is 25711636603. The next prime is 25711636667. The reversal of 25711636652 is 25663611752.

It is a happy number.

It is a super-2 number, since 2×25711636652² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 773588 + ... + 806139.

It is an arithmetic number, because the mean of its divisors is an integer number (2025474584).

Almost surely, 2^25711636652 is an apocalyptic number.

It is an amenable number.

25711636652 is a deficient number, since it is larger than the sum of its proper divisors (22899753364).

25711636652 is a wasteful number, since it uses less digits than its factorization.

25711636652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580057 (or 1580055 counting only the distinct ones).

The product of its digits is 453600, while the sum is 44.

Subtracting from 25711636652 its reverse (25663611752), we obtain a triangular number (48024900 = T₉₈₀₀).

The spelling of 25711636652 in words is "twenty-five billion, seven hundred eleven million, six hundred thirty-six thousand, six hundred fifty-two".