1251265484 has 24 divisors (see below), whose sum is σ = 2649739680. Its totient is φ = 504711936.

The previous prime is 1251265441. The next prime is 1251265517. The reversal of 1251265484 is 4845621521.

It is a happy number.

It is a super-2 number, since 2×1251265484² = 3131330622899508512, which contains 22 as substring.

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, 1313879 + ... + 1314830.

It is an arithmetic number, because the mean of its divisors is an integer number (110405820).

Almost surely, 2^1251265484 is an apocalyptic number.

1251265484 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1251265484 is an abundant number, since it is smaller than the sum of its proper divisors (1398474196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1251265484 is a wasteful number, since it uses less digits than its factorization.

1251265484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628737 (or 2628735 counting only the distinct ones).

The product of its digits is 76800, while the sum is 38.

The square root of 1251265484 is about 35373.2311783925. The cubic root of 1251265484 is about 1077.5807427610.

The spelling of 1251265484 in words is "one billion, two hundred fifty-one million, two hundred sixty-five thousand, four hundred eighty-four".