265530166 has 16 divisors (see below), whose sum is σ = 443750400. Its totient is φ = 118127080.

The previous prime is 265530163. The next prime is 265530217. The reversal of 265530166 is 661035562.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265530163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127366 + ... + 129433.

It is an arithmetic number, because the mean of its divisors is an integer number (27734400).

Almost surely, 2^265530166 is an apocalyptic number.

265530166 is a deficient number, since it is larger than the sum of its proper divisors (178220234).

265530166 is a wasteful number, since it uses less digits than its factorization.

265530166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256859.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 265530166 is about 16295.0963789724. The cubic root of 265530166 is about 642.7438881921.

The spelling of 265530166 in words is "two hundred sixty-five million, five hundred thirty thousand, one hundred sixty-six".