15255725 has 6 divisors (see below), whose sum is σ = 18917130. Its totient is φ = 12204560.

The previous prime is 15255719. The next prime is 15255733. The reversal of 15255725 is 52755251.

15255725 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 3 ways, for example, as 3736489 + 11519236 = 1933^2 + 3394^2 .

It is not a de Polignac number, because 15255725 - 2⁶ = 15255661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15255691 and 15255700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 305090 + ... + 305139.

It is an arithmetic number, because the mean of its divisors is an integer number (3152855).

Almost surely, 2^15255725 is an apocalyptic number.

It is an amenable number.

15255725 is a deficient number, since it is larger than the sum of its proper divisors (3661405).

15255725 is an equidigital number, since it uses as much as digits as its factorization.

15255725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610239 (or 610234 counting only the distinct ones).

The product of its digits is 17500, while the sum is 32.

The square root of 15255725 is about 3905.8577803090. The cubic root of 15255725 is about 248.0148111602.

The spelling of 15255725 in words is "fifteen million, two hundred fifty-five thousand, seven hundred twenty-five".