23281925 has 24 divisors (see below), whose sum is σ = 31638600. Its totient is φ = 16916480.

The previous prime is 23281919. The next prime is 23281933. The reversal of 23281925 is 52918232.

23281925 = 953² + 954² + ... + 977².

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 3265249 + 20016676 = 1807^2 + 4474^2 .

It is not a de Polignac number, because 23281925 - 2⁶ = 23281861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23281891 and 23281900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11381 + ... + 13269.

It is an arithmetic number, because the mean of its divisors is an integer number (1318275).

Almost surely, 2^23281925 is an apocalyptic number.

23281925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23281925 is a deficient number, since it is larger than the sum of its proper divisors (8356675).

23281925 is a wasteful number, since it uses less digits than its factorization.

23281925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945 (or 1940 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 23281925 is about 4825.1347131453. The cubic root of 23281925 is about 285.5439493624.

The spelling of 23281925 in words is "twenty-three million, two hundred eighty-one thousand, nine hundred twenty-five".