23221425 has 24 divisors (see below), whose sum is σ = 38568960. Its totient is φ = 12328000.

The previous prime is 23221417. The next prime is 23221447. The reversal of 23221425 is 52412232.

It is not a de Polignac number, because 23221425 - 2³ = 23221417 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 19600 + ... + 20750.

It is an arithmetic number, because the mean of its divisors is an integer number (1607040).

Almost surely, 2^23221425 is an apocalyptic number.

23221425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23221425 is a deficient number, since it is larger than the sum of its proper divisors (15347535).

23221425 is a wasteful number, since it uses less digits than its factorization.

23221425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433 (or 1428 counting only the distinct ones).

The product of its digits is 960, while the sum is 21.

The square root of 23221425 is about 4818.8613800357. The cubic root of 23221425 is about 285.2963983196.

Adding to 23221425 its reverse (52412232), we get a palindrome (75633657).

The spelling of 23221425 in words is "twenty-three million, two hundred twenty-one thousand, four hundred twenty-five".