22065725 has 12 divisors (see below), whose sum is σ = 29849280. Its totient is φ = 16047600.

The previous prime is 22065721. The next prime is 22065731. The reversal of 22065725 is 52756022.

It is not a de Polignac number, because 22065725 - 2² = 22065721 is a prime.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22065721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39845 + ... + 40394.

It is an arithmetic number, because the mean of its divisors is an integer number (2487440).

Almost surely, 2^22065725 is an apocalyptic number.

22065725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22065725 is a deficient number, since it is larger than the sum of its proper divisors (7783555).

22065725 is a wasteful number, since it uses less digits than its factorization.

22065725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80260 (or 80255 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 22065725 is about 4697.4168433300. The cubic root of 22065725 is about 280.4826920687.

The spelling of 22065725 in words is "twenty-two million, sixty-five thousand, seven hundred twenty-five".