225757163520 has 624 divisors, whose sum is σ = 918684212160. Its totient is φ = 50196381696.

The previous prime is 225757163507. The next prime is 225757163539. The reversal of 225757163520 is 25361757522.

225757163520 is a `hidden beast` number, since 2 + 2 + 5 + 7 + 5 + 7 + 1 + 635 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47736516 + ... + 47741244.

It is an arithmetic number, because the mean of its divisors is an integer number (1472250340).

Almost surely, 2^225757163520 is an apocalyptic number.

225757163520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225757163520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (459342106080).

225757163520 is an abundant number, since it is smaller than the sum of its proper divisors (692927048640).

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

225757163520 is a wasteful number, since it uses less digits than its factorization.

225757163520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4808 (or 4783 counting only the distinct ones).

The product of its (nonzero) digits is 882000, while the sum is 45.

The spelling of 225757163520 in words is "two hundred twenty-five billion, seven hundred fifty-seven million, one hundred sixty-three thousand, five hundred twenty".