15775790725 has 48 divisors (see below), whose sum is σ = 21452992000. Its totient is φ = 11463379200.

The previous prime is 15775790699. The next prime is 15775790743. The reversal of 15775790725 is 52709757751.

It is not a de Polignac number, because 15775790725 - 2¹⁵ = 15775757957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1600111 + ... + 1609939.

Almost surely, 2^15775790725 is an apocalyptic number.

It is an amenable number.

15775790725 is a deficient number, since it is larger than the sum of its proper divisors (5677201275).

15775790725 is a wasteful number, since it uses less digits than its factorization.

15775790725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9998 (or 9993 counting only the distinct ones).

The product of its (nonzero) digits is 5402250, while the sum is 55.

The spelling of 15775790725 in words is "fifteen billion, seven hundred seventy-five million, seven hundred ninety thousand, seven hundred twenty-five".