25257725572 has 6 divisors (see below), whose sum is σ = 44201019758. Its totient is φ = 12628862784.

The previous prime is 25257725561. The next prime is 25257725641. The reversal of 25257725572 is 27552775252.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22567851076 + 2689874496 = 150226^2 + 51864^2 .

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 as a sum of consecutive naturals, namely, 3157215693 + ... + 3157215700.

Almost surely, 2^25257725572 is an apocalyptic number.

It is an amenable number.

25257725572 is a deficient number, since it is larger than the sum of its proper divisors (18943294186).

25257725572 is a wasteful number, since it uses less digits than its factorization.

25257725572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6314431397 (or 6314431395 counting only the distinct ones).

The product of its digits is 3430000, while the sum is 49.

The spelling of 25257725572 in words is "twenty-five billion, two hundred fifty-seven million, seven hundred twenty-five thousand, five hundred seventy-two".