15256225 has 12 divisors (see below), whose sum is σ = 20031084. Its totient is φ = 11486720.

The previous prime is 15256207. The next prime is 15256231. The reversal of 15256225 is 52265251.

It can be written as a sum of positive squares in 6 ways, for example, as 147456 + 15108769 = 384^2 + 3887^2 .

It is not a de Polignac number, because 15256225 - 2⁵ = 15256193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15256193 and 15256202.

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, 17524 + ... + 18373.

It is an arithmetic number, because the mean of its divisors is an integer number (1669257).

Almost surely, 2^15256225 is an apocalyptic number.

It is an amenable number.

15256225 is a deficient number, since it is larger than the sum of its proper divisors (4774859).

15256225 is a wasteful number, since it uses less digits than its factorization.

15256225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35924 (or 35919 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 15256225 is about 3905.9217862113. The cubic root of 15256225 is about 248.0175206578.

It can be divided in two parts, 1525 and 6225, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 15256225 in words is "fifteen million, two hundred fifty-six thousand, two hundred twenty-five".