23421725 has 6 divisors (see below), whose sum is σ = 29042970. Its totient is φ = 18737360.

The previous prime is 23421719. The next prime is 23421773. The reversal of 23421725 is 52712432.

It can be written as a sum of positive squares in 3 ways, for example, as 487204 + 22934521 = 698^2 + 4789^2 .

It is not a de Polignac number, because 23421725 - 2⁸ = 23421469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23421694 and 23421703.

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, 468410 + ... + 468459.

It is an arithmetic number, because the mean of its divisors is an integer number (4840495).

Almost surely, 2^23421725 is an apocalyptic number.

23421725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23421725 is a deficient number, since it is larger than the sum of its proper divisors (5621245).

23421725 is an equidigital number, since it uses as much as digits as its factorization.

23421725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936879 (or 936874 counting only the distinct ones).

The product of its digits is 3360, while the sum is 26.

The square root of 23421725 is about 4839.5996735267. The cubic root of 23421725 is about 286.1143404781.

The spelling of 23421725 in words is "twenty-three million, four hundred twenty-one thousand, seven hundred twenty-five".