220387925 has 12 divisors (see below), whose sum is σ = 273778980. Its totient is φ = 175989120.

The previous prime is 220387919. The next prime is 220387931. The reversal of 220387925 is 529783022.

220387925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (220387919) and next prime (220387931).

It can be written as a sum of positive squares in 6 ways, for example, as 72352036 + 148035889 = 8506^2 + 12167^2 .

It is not a de Polignac number, because 220387925 - 2²⁰ = 219339349 is a prime.

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, 6479 + ... + 21971.

It is an arithmetic number, because the mean of its divisors is an integer number (22814915).

Almost surely, 2^220387925 is an apocalyptic number.

220387925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220387925 is a deficient number, since it is larger than the sum of its proper divisors (53391055).

220387925 is a wasteful number, since it uses less digits than its factorization.

220387925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16072 (or 16067 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 220387925 is about 14845.4681637192. The cubic root of 220387925 is about 604.0356880291.

The spelling of 220387925 in words is "two hundred twenty million, three hundred eighty-seven thousand, nine hundred twenty-five".