22840725 has 24 divisors (see below), whose sum is σ = 39408192. Its totient is φ = 11651200.

The previous prime is 22840711. The next prime is 22840739. The reversal of 22840725 is 52704822.

It is an interprime number because it is at equal distance from previous prime (22840711) and next prime (22840739).

It is not a de Polignac number, because 22840725 - 2⁴ = 22840709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22840692 and 22840701.

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, 4896 + ... + 8345.

It is an arithmetic number, because the mean of its divisors is an integer number (1642008).

Almost surely, 2^22840725 is an apocalyptic number.

22840725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22840725 is a deficient number, since it is larger than the sum of its proper divisors (16567467).

22840725 is a wasteful number, since it uses less digits than its factorization.

22840725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13277 (or 13272 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 22840725 is about 4779.1971083018. The cubic root of 22840725 is about 283.7287175069.

It can be divided in two parts, 228407 and 25, that multiplied together give a palindrome (5710175).

The spelling of 22840725 in words is "twenty-two million, eight hundred forty thousand, seven hundred twenty-five".