220908725 has 12 divisors (see below), whose sum is σ = 288344640. Its totient is φ = 167425200.

The previous prime is 220908707. The next prime is 220908739. The reversal of 220908725 is 527809022.

It is not a de Polignac number, because 220908725 - 2¹⁸ = 220646581 is a prime.

It is a super-2 number, since 2×220908725² = 97601329562251250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 232061 + ... + 233010.

It is an arithmetic number, because the mean of its divisors is an integer number (24028720).

Almost surely, 2^220908725 is an apocalyptic number.

220908725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220908725 is a deficient number, since it is larger than the sum of its proper divisors (67435915).

220908725 is a wasteful number, since it uses less digits than its factorization.

220908725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465100 (or 465095 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 220908725 is about 14862.9985198142. The cubic root of 220908725 is about 604.5111138258.

The spelling of 220908725 in words is "two hundred twenty million, nine hundred eight thousand, seven hundred twenty-five".