1251210080 has 24 divisors (see below), whose sum is σ = 2955984192. Its totient is φ = 500483968.

The previous prime is 1251210043. The next prime is 1251210091. The reversal of 1251210080 is 800121521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 3909872 + ... + 3910191.

It is an arithmetic number, because the mean of its divisors is an integer number (123166008).

Almost surely, 2^1251210080 is an apocalyptic number.

1251210080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1251210080 is an abundant number, since it is smaller than the sum of its proper divisors (1704774112).

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

1251210080 is an equidigital number, since it uses as much as digits as its factorization.

1251210080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7820078 (or 7820070 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 1251210080 is about 35372.4480351587. The cubic root of 1251210080 is about 1077.5648380189.

The spelling of 1251210080 in words is "one billion, two hundred fifty-one million, two hundred ten thousand, eighty".