625255220 has 48 divisors (see below), whose sum is σ = 1337297808. Its totient is φ = 245514240.

The previous prime is 625255219. The next prime is 625255229. The reversal of 625255220 is 22552526.

It can be written as a sum of positive squares in 8 ways, for example, as 6041764 + 619213456 = 2458^2 + 24884^2 .

It is a super-3 number, since 3×625255220³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625255229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350972 + ... + 352748.

It is an arithmetic number, because the mean of its divisors is an integer number (27860371).

Almost surely, 2^625255220 is an apocalyptic number.

It is an amenable number.

625255220 is an abundant number, since it is smaller than the sum of its proper divisors (712042588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

625255220 is a wasteful number, since it uses less digits than its factorization.

625255220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100 (or 2098 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 625255220 is about 25005.1038790084. The cubic root of 625255220 is about 855.1043361837.

The spelling of 625255220 in words is "six hundred twenty-five million, two hundred fifty-five thousand, two hundred twenty".