252566460 has 36 divisors (see below), whose sum is σ = 766118808. Its totient is φ = 67351008.

The previous prime is 252566459. The next prime is 252566471. The reversal of 252566460 is 64665252.

252566460 is a `hidden beast` number, since 2 + 5 + 2 + 5 + 6 + 646 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×252566460³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 701394 + ... + 701753.

It is an arithmetic number, because the mean of its divisors is an integer number (21281078).

Almost surely, 2^252566460 is an apocalyptic number.

252566460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252566460 is an abundant number, since it is smaller than the sum of its proper divisors (513552348).

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

252566460 is a wasteful number, since it uses less digits than its factorization.

252566460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403162 (or 1403157 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 252566460 is about 15892.3396641275. The cubic root of 252566460 is about 632.1088813903.

The spelling of 252566460 in words is "two hundred fifty-two million, five hundred sixty-six thousand, four hundred sixty".