22378825 has 24 divisors (see below), whose sum is σ = 32497920. Its totient is φ = 14966400.

The previous prime is 22378819. The next prime is 22378831. The reversal of 22378825 is 52887322.

It is an interprime number because it is at equal distance from previous prime (22378819) and next prime (22378831).

It is not a de Polignac number, because 22378825 - 2⁹ = 22378313 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 5616 + ... + 8734.

It is an arithmetic number, because the mean of its divisors is an integer number (1354080).

Almost surely, 2^22378825 is an apocalyptic number.

22378825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22378825 is a deficient number, since it is larger than the sum of its proper divisors (10119095).

22378825 is a wasteful number, since it uses less digits than its factorization.

22378825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3177 (or 3172 counting only the distinct ones).

The product of its digits is 53760, while the sum is 37.

The square root of 22378825 is about 4730.6262798915. The cubic root of 22378825 is about 281.8030959509.

The spelling of 22378825 in words is "twenty-two million, three hundred seventy-eight thousand, eight hundred twenty-five".