15225712 has 20 divisors (see below), whose sum is σ = 30452416. Its totient is φ = 7367040.

The previous prime is 15225677. The next prime is 15225713. The reversal of 15225712 is 21752251.

15225712 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15225713) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 14853 + ... + 15844.

Almost surely, 2^15225712 is an apocalyptic number.

It is an amenable number.

15225712 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

15225712 is a wasteful number, since it uses less digits than its factorization.

15225712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30736 (or 30730 counting only the distinct ones).

The product of its digits is 1400, while the sum is 25.

The square root of 15225712 is about 3902.0138390324. The cubic root of 15225712 is about 247.8520623070.

Adding to 15225712 its reverse (21752251), we get a palindrome (36977963).

The spelling of 15225712 in words is "fifteen million, two hundred twenty-five thousand, seven hundred twelve".