166925400252 has 24 divisors (see below), whose sum is σ = 419453570256. Its totient is φ = 51361661568.

The previous prime is 166925400241. The next prime is 166925400263. The reversal of 166925400252 is 252004529661.

It is an interprime number because it is at equal distance from previous prime (166925400241) and next prime (166925400263).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535017153 + ... + 535017464.

It is an arithmetic number, because the mean of its divisors is an integer number (17477232094).

Almost surely, 2^166925400252 is an apocalyptic number.

166925400252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166925400252 is an abundant number, since it is smaller than the sum of its proper divisors (252528170004).

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

166925400252 is a wasteful number, since it uses less digits than its factorization.

166925400252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070034637 (or 1070034635 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 166925400252 in words is "one hundred sixty-six billion, nine hundred twenty-five million, four hundred thousand, two hundred fifty-two".