15725313 has 8 divisors (see below), whose sum is σ = 23296800. Its totient is φ = 10483524.

The previous prime is 15725309. The next prime is 15725341. The reversal of 15725313 is 31352751.

It is not a de Polignac number, because 15725313 - 2² = 15725309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 582419 = 15725313 / (1 + 5 + 7 + 2 + 5 + 3 + 1 + 3).

It is not an unprimeable number, because it can be changed into a prime (15725363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291183 + ... + 291236.

It is an arithmetic number, because the mean of its divisors is an integer number (2912100).

Almost surely, 2^15725313 is an apocalyptic number.

It is an amenable number.

15725313 is a deficient number, since it is larger than the sum of its proper divisors (7571487).

15725313 is an equidigital number, since it uses as much as digits as its factorization.

15725313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582428 (or 582422 counting only the distinct ones).

The product of its digits is 3150, while the sum is 27.

The square root of 15725313 is about 3965.5154772110. The cubic root of 15725313 is about 250.5338618214.

The spelling of 15725313 in words is "fifteen million, seven hundred twenty-five thousand, three hundred thirteen".