15139225 has 12 divisors (see below), whose sum is σ = 19210576. Its totient is φ = 11828880.

The previous prime is 15139177. The next prime is 15139237. The reversal of 15139225 is 52293151.

It is not a de Polignac number, because 15139225 - 2¹⁷ = 15008153 is a prime.

It is a super-2 number, since 2×15139225² = 458392267201250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15139193 and 15139202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5967 + ... + 8116.

Almost surely, 2^15139225 is an apocalyptic number.

It is an amenable number.

15139225 is a deficient number, since it is larger than the sum of its proper divisors (4071351).

15139225 is a wasteful number, since it uses less digits than its factorization.

15139225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14136 (or 14131 counting only the distinct ones).

The product of its digits is 2700, while the sum is 28.

The square root of 15139225 is about 3890.9157019910. The cubic root of 15139225 is about 247.3818774497.

The spelling of 15139225 in words is "fifteen million, one hundred thirty-nine thousand, two hundred twenty-five".