220925525 has 12 divisors (see below), whose sum is σ = 274156932. Its totient is φ = 176605440.

The previous prime is 220925519. The next prime is 220925527. The reversal of 220925525 is 525529022.

220925525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 877969 + 220047556 = 937^2 + 14834^2 .

It is not a de Polignac number, because 220925525 - 2⁶ = 220925461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 220925491 and 220925500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220925527) 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, 41939 + ... + 46911.

It is an arithmetic number, because the mean of its divisors is an integer number (22846411).

Almost surely, 2^220925525 is an apocalyptic number.

220925525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220925525 is a deficient number, since it is larger than the sum of its proper divisors (53231407).

220925525 is a wasteful number, since it uses less digits than its factorization.

220925525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6760 (or 6755 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 220925525 is about 14863.5636709371. The cubic root of 220925525 is about 604.5264376951.

The spelling of 220925525 in words is "two hundred twenty million, nine hundred twenty-five thousand, five hundred twenty-five".