25364506516 has 6 divisors (see below), whose sum is σ = 44387886410. Its totient is φ = 12682253256.

The previous prime is 25364506493. The next prime is 25364506523. The reversal of 25364506516 is 61560546352.

It can be written as a sum of positive squares in only one way, i.e., 15676041616 + 9688464900 = 125204^2 + 98430^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3170563311 + ... + 3170563318.

Almost surely, 2^25364506516 is an apocalyptic number.

It is an amenable number.

25364506516 is a deficient number, since it is larger than the sum of its proper divisors (19023379894).

25364506516 is a wasteful number, since it uses less digits than its factorization.

25364506516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6341126633 (or 6341126631 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 25364506516 in words is "twenty-five billion, three hundred sixty-four million, five hundred six thousand, five hundred sixteen".