1252441220 has 48 divisors (see below), whose sum is σ = 2712080448. Its totient is φ = 485546880.

The previous prime is 1252441213. The next prime is 1252441237. The reversal of 1252441220 is 221442521.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107102 + ... + 118218.

It is an arithmetic number, because the mean of its divisors is an integer number (56501676).

Almost surely, 2^1252441220 is an apocalyptic number.

1252441220 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 1252441220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1356040224).

1252441220 is an abundant number, since it is smaller than the sum of its proper divisors (1459639228).

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

1252441220 is a wasteful number, since it uses less digits than its factorization.

1252441220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11300 (or 11298 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1252441220 is about 35389.8462839273. The cubic root of 1252441220 is about 1077.9181488699.

Adding to 1252441220 its reverse (221442521), we get a palindrome (1473883741).

The spelling of 1252441220 in words is "one billion, two hundred fifty-two million, four hundred forty-one thousand, two hundred twenty".