23537725 has 6 divisors (see below), whose sum is σ = 29186810. Its totient is φ = 18830160.

The previous prime is 23537719. The next prime is 23537737. The reversal of 23537725 is 52773532.

It can be written as a sum of positive squares in 3 ways, for example, as 1466521 + 22071204 = 1211^2 + 4698^2 .

It is a de Polignac number, because none of the positive numbers 2^k-23537725 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 470730 + ... + 470779.

Almost surely, 2^23537725 is an apocalyptic number.

23537725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23537725 is a deficient number, since it is larger than the sum of its proper divisors (5649085).

23537725 is an equidigital number, since it uses as much as digits as its factorization.

23537725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941519 (or 941514 counting only the distinct ones).

The product of its digits is 44100, while the sum is 34.

The square root of 23537725 is about 4851.5693337311. The cubic root of 23537725 is about 286.5859058299.

The spelling of 23537725 in words is "twenty-three million, five hundred thirty-seven thousand, seven hundred twenty-five".