15228825 has 12 divisors (see below), whose sum is σ = 25178448. Its totient is φ = 8122000.

The previous prime is 15228817. The next prime is 15228827. The reversal of 15228825 is 52882251.

It is not a de Polignac number, because 15228825 - 2³ = 15228817 is a prime.

It is a super-2 number, since 2×15228825² = 463834221761250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15228827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101451 + ... + 101600.

It is an arithmetic number, because the mean of its divisors is an integer number (2098204).

Almost surely, 2^15228825 is an apocalyptic number.

15228825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15228825 is a deficient number, since it is larger than the sum of its proper divisors (9949623).

15228825 is a wasteful number, since it uses less digits than its factorization.

15228825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203064 (or 203059 counting only the distinct ones).

The product of its digits is 12800, while the sum is 33.

The square root of 15228825 is about 3902.4127152314. The cubic root of 15228825 is about 247.8689528338.

The spelling of 15228825 in words is "fifteen million, two hundred twenty-eight thousand, eight hundred twenty-five".