1252564166 has 12 divisors (see below), whose sum is σ = 2185596828. Its totient is φ = 536813172.

The previous prime is 1252564163. The next prime is 1252564169. The reversal of 1252564166 is 6614652521.

It is an interprime number because it is at equal distance from previous prime (1252564163) and next prime (1252564169).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252564163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6390536 + ... + 6390731.

It is an arithmetic number, because the mean of its divisors is an integer number (182133069).

Almost surely, 2^1252564166 is an apocalyptic number.

1252564166 is a deficient number, since it is larger than the sum of its proper divisors (933032662).

1252564166 is a wasteful number, since it uses less digits than its factorization.

1252564166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12781283 (or 12781276 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

The square root of 1252564166 is about 35391.5832649516. The cubic root of 1252564166 is about 1077.9534190251.

The spelling of 1252564166 in words is "one billion, two hundred fifty-two million, five hundred sixty-four thousand, one hundred sixty-six".