22405625 has 20 divisors (see below), whose sum is σ = 30552720. Its totient is φ = 16290000.

The previous prime is 22405613. The next prime is 22405631. The reversal of 22405625 is 52650422.

It is not a de Polignac number, because 22405625 - 2⁶ = 22405561 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 22405594 and 22405603.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5246 + ... + 8504.

It is an arithmetic number, because the mean of its divisors is an integer number (1527636).

Almost surely, 2^22405625 is an apocalyptic number.

22405625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22405625 is a deficient number, since it is larger than the sum of its proper divisors (8147095).

22405625 is an equidigital number, since it uses as much as digits as its factorization.

22405625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3290 (or 3275 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 22405625 is about 4733.4580382634. The cubic root of 22405625 is about 281.9155431741.

The spelling of 22405625 in words is "twenty-two million, four hundred five thousand, six hundred twenty-five".