25616461652 has 24 divisors (see below), whose sum is σ = 45052234920. Its totient is φ = 12744483840.

The previous prime is 25616461639. The next prime is 25616461699.

25616461652 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 5351800336 + 20264661316 = 73156^2 + 142354^2 .

It is a congruent number.

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, 1220624 + ... + 1241432.

It is an arithmetic number, because the mean of its divisors is an integer number (1877176455).

Almost surely, 2^25616461652 is an apocalyptic number.

It is an amenable number.

25616461652 is a deficient number, since it is larger than the sum of its proper divisors (19435773268).

25616461652 is a wasteful number, since it uses less digits than its factorization.

25616461652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22331 (or 22329 counting only the distinct ones).

The product of its digits is 518400, while the sum is 44.

The spelling of 25616461652 in words is "twenty-five billion, six hundred sixteen million, four hundred sixty-one thousand, six hundred fifty-two".