1275265250 has 32 divisors (see below), whose sum is σ = 2728342656. Its totient is φ = 437233200.

The previous prime is 1275265231. The next prime is 1275265267. The reversal of 1275265250 is 525625721.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1275265250.

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, 362612 + ... + 366111.

It is an arithmetic number, because the mean of its divisors is an integer number (85260708).

Almost surely, 2^1275265250 is an apocalyptic number.

1275265250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1275265250 is an abundant number, since it is smaller than the sum of its proper divisors (1453077406).

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

1275265250 is an equidigital number, since it uses as much as digits as its factorization.

1275265250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728747 (or 728737 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 1275265250 is about 35710.8561924802. The cubic root of 1275265250 is about 1084.4266332857.

The spelling of 1275265250 in words is "one billion, two hundred seventy-five million, two hundred sixty-five thousand, two hundred fifty".