1252914865 has 8 divisors (see below), whose sum is σ = 1538463168. Its totient is φ = 979021680.

The previous prime is 1252914851. The next prime is 1252914877. The reversal of 1252914865 is 5684192521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1252914865 - 2²¹ = 1250817713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian 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, 2913541 + ... + 2913970.

It is an arithmetic number, because the mean of its divisors is an integer number (192307896).

Almost surely, 2^1252914865 is an apocalyptic number.

It is an amenable number.

1252914865 is a deficient number, since it is larger than the sum of its proper divisors (285548303).

1252914865 is an equidigital number, since it uses as much as digits as its factorization.

1252914865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5827559.

The product of its digits is 172800, while the sum is 43.

The square root of 1252914865 is about 35396.5374719054. The cubic root of 1252914865 is about 1078.0540131823.

The spelling of 1252914865 in words is "one billion, two hundred fifty-two million, nine hundred fourteen thousand, eight hundred sixty-five".