1285753264 has 20 divisors (see below), whose sum is σ = 2493806904. Its totient is φ = 642190208.

The previous prime is 1285753243. The next prime is 1285753279. The reversal of 1285753264 is 4623575821.

It is a super-2 number, since 2×1285753264² = 3306322911773307392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1285753264.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27277 + ... + 57580.

Almost surely, 2^1285753264 is an apocalyptic number.

It is an amenable number.

1285753264 is a deficient number, since it is larger than the sum of its proper divisors (1208053640).

1285753264 is an equidigital number, since it uses as much as digits as its factorization.

1285753264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85812 (or 85806 counting only the distinct ones).

The product of its digits is 403200, while the sum is 43.

The square root of 1285753264 is about 35857.4018021384. The cubic root of 1285753264 is about 1087.3913613941.

The spelling of 1285753264 in words is "one billion, two hundred eighty-five million, seven hundred fifty-three thousand, two hundred sixty-four".