15252772557 has 32 divisors (see below), whose sum is σ = 23390576640. Its totient is φ = 8743680000.

The previous prime is 15252772553. The next prime is 15252772567. The reversal of 15252772557 is 75527725251.

It is not a de Polignac number, because 15252772557 - 2² = 15252772553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15252772553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 382932 + ... + 420882.

It is an arithmetic number, because the mean of its divisors is an integer number (730955520).

Almost surely, 2^15252772557 is an apocalyptic number.

It is an amenable number.

15252772557 is a deficient number, since it is larger than the sum of its proper divisors (8137804083).

15252772557 is a wasteful number, since it uses less digits than its factorization.

15252772557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38625.

The product of its digits is 1715000, while the sum is 48.

The spelling of 15252772557 in words is "fifteen billion, two hundred fifty-two million, seven hundred seventy-two thousand, five hundred fifty-seven".