15246640225 has 12 divisors (see below), whose sum is σ = 18907939120. Its totient is φ = 12195954000.

The previous prime is 15246640217. The next prime is 15246640237. The reversal of 15246640225 is 52204664251.

It is a happy number.

It is not a de Polignac number, because 15246640225 - 2³ = 15246640217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 237646 + ... + 294904.

Almost surely, 2^15246640225 is an apocalyptic number.

It is an amenable number.

15246640225 is a deficient number, since it is larger than the sum of its proper divisors (3661298895).

15246640225 is a wasteful number, since it uses less digits than its factorization.

15246640225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67920 (or 67915 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 15246640225 in words is "fifteen billion, two hundred forty-six million, six hundred forty thousand, two hundred twenty-five".