1252651369 has 12 divisors (see below), whose sum is σ = 1311777936. Its totient is φ = 1196088872.

The previous prime is 1252651357. The next prime is 1252651403. The reversal of 1252651369 is 9631562521.

It is a de Polignac number, because none of the positive numbers 2^k-1252651369 is a prime.

It is a super-2 number, since 2×1252651369² = 3138270904515148322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252651319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 359574 + ... + 363040.

It is an arithmetic number, because the mean of its divisors is an integer number (109314828).

Almost surely, 2^1252651369 is an apocalyptic number.

It is an amenable number.

1252651369 is a deficient number, since it is larger than the sum of its proper divisors (59126567).

1252651369 is an equidigital number, since it uses as much as digits as its factorization.

1252651369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4196 (or 4173 counting only the distinct ones).

The product of its digits is 97200, while the sum is 40.

The square root of 1252651369 is about 35392.8152172161. The cubic root of 1252651369 is about 1077.9784340019.

The spelling of 1252651369 in words is "one billion, two hundred fifty-two million, six hundred fifty-one thousand, three hundred sixty-nine".