25512821552 has 10 divisors (see below), whose sum is σ = 49431091788. Its totient is φ = 12756410768.

The previous prime is 25512821437. The next prime is 25512821557.

25512821552 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (25512821557) by changing a digit.

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, 797275658 + ... + 797275689.

Almost surely, 2^25512821552 is an apocalyptic number.

It is an amenable number.

25512821552 is a deficient number, since it is larger than the sum of its proper divisors (23918270236).

25512821552 is a wasteful number, since it uses less digits than its factorization.

25512821552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594551355 (or 1594551349 counting only the distinct ones).

The product of its digits is 80000, while the sum is 38.

The spelling of 25512821552 in words is "twenty-five billion, five hundred twelve million, eight hundred twenty-one thousand, five hundred fifty-two".