22578125 has 24 divisors (see below), whose sum is σ = 29980392. Its totient is φ = 17000000.

The previous prime is 22578089. The next prime is 22578133. The reversal of 22578125 is 52187522.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 12 ways, for example, as 15507844 + 7070281 = 3938^2 + 2659^2 .

It is not a de Polignac number, because 22578125 - 2²⁰ = 21529549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22578091 and 22578100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1328117 + ... + 1328133.

It is an arithmetic number, because the mean of its divisors is an integer number (1249183).

Almost surely, 2^22578125 is an apocalyptic number.

22578125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22578125 is a deficient number, since it is larger than the sum of its proper divisors (7402267).

22578125 is an frugal number, since it uses more digits than its factorization.

22578125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69 (or 22 counting only the distinct ones).

The product of its digits is 11200, while the sum is 32.

The square root of 22578125 is about 4751.6444521871. The cubic root of 22578125 is about 282.6371798320.

The spelling of 22578125 in words is "twenty-two million, five hundred seventy-eight thousand, one hundred twenty-five".