22287925 has 12 divisors (see below), whose sum is σ = 30149856. Its totient is φ = 16209200.

The previous prime is 22287871. The next prime is 22287929. The reversal of 22287925 is 52978222.

It is not a de Polignac number, because 22287925 - 2⁹ = 22287413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22287929) by changing a digit.

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, 40249 + ... + 40798.

It is an arithmetic number, because the mean of its divisors is an integer number (2512488).

Almost surely, 2^22287925 is an apocalyptic number.

22287925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22287925 is a deficient number, since it is larger than the sum of its proper divisors (7861931).

22287925 is a wasteful number, since it uses less digits than its factorization.

22287925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81068 (or 81063 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 22287925 is about 4721.0088964119. The cubic root of 22287925 is about 281.4210284866.

It can be divided in two parts, 2228 and 7925, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 22287925 in words is "twenty-two million, two hundred eighty-seven thousand, nine hundred twenty-five".