22857825 has 12 divisors (see below), whose sum is σ = 37791728. Its totient is φ = 12190800.

The previous prime is 22857803. The next prime is 22857851. The reversal of 22857825 is 52875822.

It is a happy number.

It is not a de Polignac number, because 22857825 - 2⁶ = 22857761 is a prime.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 152311 + ... + 152460.

Almost surely, 2^22857825 is an apocalyptic number.

22857825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22857825 is a deficient number, since it is larger than the sum of its proper divisors (14933903).

22857825 is a wasteful number, since it uses less digits than its factorization.

22857825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304784 (or 304779 counting only the distinct ones).

The product of its digits is 89600, while the sum is 39.

The square root of 22857825 is about 4780.9857770129. The cubic root of 22857825 is about 283.7995055517.

The spelling of 22857825 in words is "twenty-two million, eight hundred fifty-seven thousand, eight hundred twenty-five".