1250401290 has 16 divisors (see below), whose sum is σ = 3000963168. Its totient is φ = 333440336.

The previous prime is 1250401283. The next prime is 1250401291. The reversal of 1250401290 is 921040521.

It is a self number, because there is not a number n which added to its sum of digits gives 1250401290.

It is not an unprimeable number, because it can be changed into a prime (1250401291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20839992 + ... + 20840051.

It is an arithmetic number, because the mean of its divisors is an integer number (187560198).

Almost surely, 2^1250401290 is an apocalyptic number.

1250401290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1250401290 is an abundant number, since it is smaller than the sum of its proper divisors (1750561878).

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

1250401290 is a wasteful number, since it uses less digits than its factorization.

1250401290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41680053.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1250401290 is about 35361.0137015329. The cubic root of 1250401290 is about 1077.3326064289.

The spelling of 1250401290 in words is "one billion, two hundred fifty million, four hundred one thousand, two hundred ninety".