1250245220 has 96 divisors (see below), whose sum is σ = 3170872320. Its totient is φ = 404507520.

The previous prime is 1250245189. The next prime is 1250245313. The reversal of 1250245220 is 225420521.

It is a super-2 number, since 2×1250245220² = 3126226220265696800, which contains 22 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 815855 + ... + 817385.

It is an arithmetic number, because the mean of its divisors is an integer number (33029920).

Almost surely, 2^1250245220 is an apocalyptic number.

1250245220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1250245220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1585436160).

1250245220 is an abundant number, since it is smaller than the sum of its proper divisors (1920627100).

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

1250245220 is a wasteful number, since it uses less digits than its factorization.

1250245220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873 (or 1871 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 1250245220 is about 35358.8068237603. The cubic root of 1250245220 is about 1077.2877818068.

Adding to 1250245220 its reverse (225420521), we get a palindrome (1475665741).

The spelling of 1250245220 in words is "one billion, two hundred fifty million, two hundred forty-five thousand, two hundred twenty".