15028225 has 12 divisors (see below), whose sum is σ = 18687420. Its totient is φ = 11988800.

The previous prime is 15028219. The next prime is 15028231. The reversal of 15028225 is 52282051.

It is an interprime number because it is at equal distance from previous prime (15028219) and next prime (15028231).

It can be written as a sum of positive squares in 6 ways, for example, as 1100401 + 13927824 = 1049^2 + 3732^2 .

It is not a de Polignac number, because 15028225 - 2³ = 15028217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 15028225.

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, 12135 + ... + 13315.

It is an arithmetic number, because the mean of its divisors is an integer number (1557285).

It is a Proth number, since it is equal to 3669 ⋅ 2¹² + 1 and 3669 < 2¹².

Almost surely, 2^15028225 is an apocalyptic number.

It is an amenable number.

15028225 is a deficient number, since it is larger than the sum of its proper divisors (3659195).

15028225 is a wasteful number, since it uses less digits than its factorization.

15028225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700 (or 1695 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 15028225 is about 3876.6254655306. The cubic root of 15028225 is about 246.7757968134.

It can be divided in two parts, 15028 and 225, that multiplied together give a triangular number (3381300 = T₂₆₀₀).

The spelling of 15028225 in words is "fifteen million, twenty-eight thousand, two hundred twenty-five".