15725025 has 36 divisors (see below), whose sum is σ = 28783872. Its totient is φ = 8202720.

The previous prime is 15725023. The next prime is 15725053. The reversal of 15725025 is 52052751.

It is a happy number.

15725025 is a `hidden beast` number, since 157 + 2 + 502 + 5 = 666.

It is not a de Polignac number, because 15725025 - 2¹ = 15725023 is a prime.

It is a super-2 number, since 2×15725025² = 494552822501250, 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 15725025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15725023) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9832 + ... + 11318.

It is an arithmetic number, because the mean of its divisors is an integer number (799552).

Almost surely, 2^15725025 is an apocalyptic number.

15725025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15725025 is a deficient number, since it is larger than the sum of its proper divisors (13058847).

15725025 is a wasteful number, since it uses less digits than its factorization.

15725025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550 (or 1542 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 15725025 is about 3965.4791639851. The cubic root of 15725025 is about 250.5323323512.

Adding to 15725025 its reverse (52052751), we get a palindrome (67777776).

The spelling of 15725025 in words is "fifteen million, seven hundred twenty-five thousand, twenty-five".