23219725 has 12 divisors (see below), whose sum is σ = 29060020. Its totient is φ = 18403200.

The previous prime is 23219689. The next prime is 23219731. The reversal of 23219725 is 52791232.

It can be written as a sum of positive squares in 6 ways, for example, as 54756 + 23164969 = 234^2 + 4813^2 .

It is not a de Polignac number, because 23219725 - 2¹⁵ = 23186957 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1536 + ... + 6985.

Almost surely, 2^23219725 is an apocalyptic number.

23219725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23219725 is a deficient number, since it is larger than the sum of its proper divisors (5840295).

23219725 is a wasteful number, since it uses less digits than its factorization.

23219725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8640 (or 8635 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 23219725 is about 4818.6849865913. The cubic root of 23219725 is about 285.2894361326.

The spelling of 23219725 in words is "twenty-three million, two hundred nineteen thousand, seven hundred twenty-five".