22729325 has 6 divisors (see below), whose sum is σ = 28184394. Its totient is φ = 18183440.

The previous prime is 22729321. The next prime is 22729363. The reversal of 22729325 is 52392722.

It can be written as a sum of positive squares in 3 ways, for example, as 808201 + 21921124 = 899^2 + 4682^2 .

It is not a de Polignac number, because 22729325 - 2² = 22729321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22729291 and 22729300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22729321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 454562 + ... + 454611.

It is an arithmetic number, because the mean of its divisors is an integer number (4697399).

Almost surely, 2^22729325 is an apocalyptic number.

22729325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22729325 is a deficient number, since it is larger than the sum of its proper divisors (5455069).

22729325 is an equidigital number, since it uses as much as digits as its factorization.

22729325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909183 (or 909178 counting only the distinct ones).

The product of its digits is 15120, while the sum is 32.

The square root of 22729325 is about 4767.5281855486. The cubic root of 22729325 is about 283.2666932856.

The spelling of 22729325 in words is "twenty-two million, seven hundred twenty-nine thousand, three hundred twenty-five".