15225944 has 16 divisors (see below), whose sum is σ = 29320800. Its totient is φ = 7407072.

The previous prime is 15225943. The next prime is 15225983. The reversal of 15225944 is 44952251.

15225944 = 968² + 969² + ... + 983².

It is a super-2 number, since 2×15225944² = 463658741382272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15225944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15225941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25424 + ... + 26015.

It is an arithmetic number, because the mean of its divisors is an integer number (1832550).

Almost surely, 2^15225944 is an apocalyptic number.

It is an amenable number.

15225944 is a deficient number, since it is larger than the sum of its proper divisors (14094856).

15225944 is a wasteful number, since it uses less digits than its factorization.

15225944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51482 (or 51478 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 15225944 is about 3902.0435671581. The cubic root of 15225944 is about 247.8533211728.

The spelling of 15225944 in words is "fifteen million, two hundred twenty-five thousand, nine hundred forty-four".