15641025952 has 12 divisors (see below), whose sum is σ = 30793269906. Its totient is φ = 7820512960.

The previous prime is 15641025949. The next prime is 15641025971. The reversal of 15641025952 is 25952014651.

It can be written as a sum of positive squares in only one way, i.e., 10858473616 + 4782552336 = 104204^2 + 69156^2 .

It is a super-2 number, since 2×15641025952² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244390999 + ... + 244391062.

Almost surely, 2^15641025952 is an apocalyptic number.

It is an amenable number.

15641025952 is a deficient number, since it is larger than the sum of its proper divisors (15152243954).

15641025952 is an equidigital number, since it uses as much as digits as its factorization.

15641025952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488782071 (or 488782063 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 40.

The spelling of 15641025952 in words is "fifteen billion, six hundred forty-one million, twenty-five thousand, nine hundred fifty-two".