1252279080 has 96 divisors (see below), whose sum is σ = 4382993160. Its totient is φ = 308252160.

The previous prime is 1252279079. The next prime is 1252279087. The reversal of 1252279080 is 809722521.

It can be written as a sum of positive squares in 4 ways, for example, as 402323364 + 849955716 = 20058^2 + 29154^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1252279087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129111 + ... + 138470.

Almost surely, 2^1252279080 is an apocalyptic number.

1252279080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252279080 is an abundant number, since it is smaller than the sum of its proper divisors (3130714080).

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

1252279080 is a wasteful number, since it uses less digits than its factorization.

1252279080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267611 (or 267604 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 1252279080 is about 35387.5554397305. Note that the first 3 decimals coincide. The cubic root of 1252279080 is about 1077.8716313998.

The spelling of 1252279080 in words is "one billion, two hundred fifty-two million, two hundred seventy-nine thousand, eighty".