22840925 has 6 divisors (see below), whose sum is σ = 28322778. Its totient is φ = 18272720.

The previous prime is 22840921. The next prime is 22840927. The reversal of 22840925 is 52904822.

It can be written as a sum of positive squares in 3 ways, for example, as 306916 + 22534009 = 554^2 + 4747^2 .

It is not a de Polignac number, because 22840925 - 2² = 22840921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22840891 and 22840900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22840921) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 456794 + ... + 456843.

It is an arithmetic number, because the mean of its divisors is an integer number (4720463).

Almost surely, 2^22840925 is an apocalyptic number.

22840925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22840925 is a deficient number, since it is larger than the sum of its proper divisors (5481853).

22840925 is an equidigital number, since it uses as much as digits as its factorization.

22840925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913647 (or 913642 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 22840925 is about 4779.2180322726. The cubic root of 22840925 is about 283.7295456414.

The spelling of 22840925 in words is "twenty-two million, eight hundred forty thousand, nine hundred twenty-five".