15125708897 has 4 divisors (see below), whose sum is σ = 16289224980. Its totient is φ = 13962192816.

The previous prime is 15125708881. The next prime is 15125708909. The reversal of 15125708897 is 79880752151.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 968516641 + 14157192256 = 31121^2 + 118984^2 .

It is not a de Polignac number, because 15125708897 - 2⁴ = 15125708881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15125708827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 581758022 + ... + 581758047.

It is an arithmetic number, because the mean of its divisors is an integer number (4072306245).

Almost surely, 2^15125708897 is an apocalyptic number.

It is an amenable number.

15125708897 is a deficient number, since it is larger than the sum of its proper divisors (1163516083).

15125708897 is a wasteful number, since it uses less digits than its factorization.

15125708897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163516082.

The product of its (nonzero) digits is 1411200, while the sum is 53.

The spelling of 15125708897 in words is "fifteen billion, one hundred twenty-five million, seven hundred eight thousand, eight hundred ninety-seven".