23913225 has 90 divisors (see below), whose sum is σ = 51741294. Its totient is φ = 10886400.

The previous prime is 23913223. The next prime is 23913247. The reversal of 23913225 is 52231932.

It can be written as a sum of positive squares in 3 ways, for example, as 3337929 + 20575296 = 1827^2 + 4536^2 .

It is not a de Polignac number, because 23913225 - 2¹ = 23913223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23913223) by changing a digit.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 99105 + ... + 99345.

Almost surely, 2^23913225 is an apocalyptic number.

23913225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23913225 is an abundant number, since it is smaller than the sum of its proper divisors (27828069).

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

23913225 is a wasteful number, since it uses less digits than its factorization.

23913225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 256 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 23913225 is about 4890.1150293219. The cubic root of 23913225 is about 288.1018519963.

The spelling of 23913225 in words is "twenty-three million, nine hundred thirteen thousand, two hundred twenty-five".