15225252 has 24 divisors (see below), whose sum is σ = 40600896. Its totient is φ = 4350048.

The previous prime is 15225239. The next prime is 15225253. The reversal of 15225252 is 25252251.

Added to its reverse (25252251) it gives a triangular number (40477503 = T₈₉₉₇).

It is not an unprimeable number, because it can be changed into a prime (15225253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90543 + ... + 90710.

It is an arithmetic number, because the mean of its divisors is an integer number (1691704).

Almost surely, 2^15225252 is an apocalyptic number.

15225252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15225252 is an abundant number, since it is smaller than the sum of its proper divisors (25375644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15225252 is a wasteful number, since it uses less digits than its factorization.

15225252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181267 (or 181265 counting only the distinct ones).

The product of its digits is 2000, while the sum is 24.

The square root of 15225252 is about 3901.9548946650. The cubic root of 15225252 is about 247.8495662420.

Adding to 15225252 its reverse (25252251), we get a triangular number (40477503 = T₈₉₉₇).

The spelling of 15225252 in words is "fifteen million, two hundred twenty-five thousand, two hundred fifty-two".