1252312545 has 32 divisors (see below), whose sum is σ = 2244942720. Its totient is φ = 590768640.

The previous prime is 1252312513. The next prime is 1252312571. The reversal of 1252312545 is 5452132521.

It is not a de Polignac number, because 1252312545 - 2⁵ = 1252312513 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96460 + ... + 108669.

It is an arithmetic number, because the mean of its divisors is an integer number (70154460).

Almost surely, 2^1252312545 is an apocalyptic number.

1252312545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1252312545 is a deficient number, since it is larger than the sum of its proper divisors (992630175).

1252312545 is a wasteful number, since it uses less digits than its factorization.

1252312545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205185.

The product of its digits is 12000, while the sum is 30.

The square root of 1252312545 is about 35388.0282722844. The cubic root of 1252312545 is about 1077.8812327347.

The spelling of 1252312545 in words is "one billion, two hundred fifty-two million, three hundred twelve thousand, five hundred forty-five".