22421625 has 16 divisors (see below), whose sum is σ = 37310208. Its totient is φ = 11958000.

The previous prime is 22421599. The next prime is 22421677. The reversal of 22421625 is 52612422.

It is a happy number.

It is not a de Polignac number, because 22421625 - 2⁶ = 22421561 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22421595 and 22421604.

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 15 ways as a sum of consecutive naturals, for example, 29521 + ... + 30270.

It is an arithmetic number, because the mean of its divisors is an integer number (2331888).

Almost surely, 2^22421625 is an apocalyptic number.

22421625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22421625 is a deficient number, since it is larger than the sum of its proper divisors (14888583).

22421625 is an equidigital number, since it uses as much as digits as its factorization.

22421625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59809 (or 59799 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 22421625 is about 4735.1478329615. The cubic root of 22421625 is about 281.9826331038.

The spelling of 22421625 in words is "twenty-two million, four hundred twenty-one thousand, six hundred twenty-five".