1250451220 has 48 divisors (see below), whose sum is σ = 2674461888. Its totient is φ = 491025920.

The previous prime is 1250451211. The next prime is 1250451221. The reversal of 1250451220 is 221540521.

It is a junction number, because it is equal to n+sod(n) for n = 1250451191 and 1250451200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1250451221) 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 15 ways as a sum of consecutive naturals, for example, 239235 + ... + 244405.

It is an arithmetic number, because the mean of its divisors is an integer number (55717956).

Almost surely, 2^1250451220 is an apocalyptic number.

1250451220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1250451220 is an abundant number, since it is smaller than the sum of its proper divisors (1424010668).

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

1250451220 is a wasteful number, since it uses less digits than its factorization.

1250451220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5400 (or 5398 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 1250451220 is about 35361.7196980011. The cubic root of 1250451220 is about 1077.3469459590.

Adding to 1250451220 its reverse (221540521), we get a palindrome (1471991741).

The spelling of 1250451220 in words is "one billion, two hundred fifty million, four hundred fifty-one thousand, two hundred twenty".