15225512125 has 16 divisors (see below), whose sum is σ = 19140157296. Its totient is φ = 12091488000.

The previous prime is 15225512087. The next prime is 15225512167. The reversal of 15225512125 is 52121552251.

15225512125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 808947364 + 14416564761 = 28442^2 + 120069^2 .

It is not a de Polignac number, because 15225512125 - 2⁷ = 15225511997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 427416 + ... + 461665.

It is an arithmetic number, because the mean of its divisors is an integer number (1196259831).

Almost surely, 2^15225512125 is an apocalyptic number.

It is an amenable number.

15225512125 is a deficient number, since it is larger than the sum of its proper divisors (3914645171).

15225512125 is an equidigital number, since it uses as much as digits as its factorization.

15225512125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889233 (or 889223 counting only the distinct ones).

The product of its digits is 10000, while the sum is 31.

The spelling of 15225512125 in words is "fifteen billion, two hundred twenty-five million, five hundred twelve thousand, one hundred twenty-five".