525251166 has 32 divisors (see below), whose sum is σ = 1182974976. Its totient is φ = 154032000.

The previous prime is 525251131. The next prime is 525251183. The reversal of 525251166 is 661152525.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126315 + ... + 130406.

It is an arithmetic number, because the mean of its divisors is an integer number (36967968).

Almost surely, 2^525251166 is an apocalyptic number.

525251166 is an abundant number, since it is smaller than the sum of its proper divisors (657723810).

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

525251166 is a wasteful number, since it uses less digits than its factorization.

525251166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256768.

The product of its digits is 18000, while the sum is 33.

The square root of 525251166 is about 22918.3587108676. The cubic root of 525251166 is about 806.8429496195.

It can be divided in two parts, 5 and 25251166, that added together give a triangular number (25251171 = T₇₁₀₆).

The spelling of 525251166 in words is "five hundred twenty-five million, two hundred fifty-one thousand, one hundred sixty-six".