1275262464 has 160 divisors (see below), whose sum is σ = 3932248320. Its totient is φ = 359718912.

The previous prime is 1275262451. The next prime is 1275262489. The reversal of 1275262464 is 4642625721.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 891702 + ... + 893130.

It is an arithmetic number, because the mean of its divisors is an integer number (24576552).

Almost surely, 2^1275262464 is an apocalyptic number.

1275262464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1275262464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1966124160).

1275262464 is an abundant number, since it is smaller than the sum of its proper divisors (2656985856).

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

1275262464 is an equidigital number, since it uses as much as digits as its factorization.

1275262464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540 (or 1524 counting only the distinct ones).

The product of its digits is 161280, while the sum is 39.

The square root of 1275262464 is about 35710.8171847131. The cubic root of 1275262464 is about 1084.4258435899.

The spelling of 1275262464 in words is "one billion, two hundred seventy-five million, two hundred sixty-two thousand, four hundred sixty-four".