1265218752 has 56 divisors (see below), whose sum is σ = 3825784576. Its totient is φ = 361490688.

The previous prime is 1265218741. The next prime is 1265218771. The reversal of 1265218752 is 2578125621.

It is a tau number, because it is divible by the number of its divisors (56).

It is a self number, because there is not a number n which added to its sum of digits gives 1265218752.

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, 469348 + ... + 472035.

Almost surely, 2^1265218752 is an apocalyptic number.

1265218752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1265218752 is an abundant number, since it is smaller than the sum of its proper divisors (2560565824).

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

1265218752 is an equidigital number, since it uses as much as digits as its factorization.

1265218752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941405 (or 941395 counting only the distinct ones).

The product of its digits is 67200, while the sum is 39.

The square root of 1265218752 is about 35569.9135787536. The cubic root of 1265218752 is about 1081.5714298383.

The spelling of 1265218752 in words is "one billion, two hundred sixty-five million, two hundred eighteen thousand, seven hundred fifty-two".