22725031 has 8 divisors (see below), whose sum is σ = 26009984. Its totient is φ = 19449720.

The previous prime is 22725023. The next prime is 22725097. The reversal of 22725031 is 13052722.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22725031 - 2³ = 22725023 is a prime.

It is a super-2 number, since 2×22725031² = 1032854067901922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22724993 and 22725011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22725431) 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 7 ways as a sum of consecutive naturals, for example, 3676 + ... + 7678.

It is an arithmetic number, because the mean of its divisors is an integer number (3251248).

Almost surely, 2^22725031 is an apocalyptic number.

22725031 is a deficient number, since it is larger than the sum of its proper divisors (3284953).

22725031 is an equidigital number, since it uses as much as digits as its factorization.

22725031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4821.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 22725031 is about 4767.0778260901. The cubic root of 22725031 is about 283.2488540143.

Adding to 22725031 its reverse (13052722), we get a palindrome (35777753).

The spelling of 22725031 in words is "twenty-two million, seven hundred twenty-five thousand, thirty-one".