25760557252 has 6 divisors (see below), whose sum is σ = 45080975198. Its totient is φ = 12880278624.

The previous prime is 25760557247. The next prime is 25760557309. The reversal of 25760557252 is 25275506752.

It can be written as a sum of positive squares in only one way, i.e., 16709698756 + 9050858496 = 129266^2 + 95136^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3220069653 + ... + 3220069660.

Almost surely, 2^25760557252 is an apocalyptic number.

It is an amenable number.

25760557252 is a deficient number, since it is larger than the sum of its proper divisors (19320417946).

25760557252 is a wasteful number, since it uses less digits than its factorization.

25760557252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6440139317 (or 6440139315 counting only the distinct ones).

The product of its (nonzero) digits is 1470000, while the sum is 46.

The spelling of 25760557252 in words is "twenty-five billion, seven hundred sixty million, five hundred fifty-seven thousand, two hundred fifty-two".