1252411720 has 64 divisors (see below), whose sum is σ = 3225484800. Its totient is φ = 428732160.

The previous prime is 1252411697. The next prime is 1252411723. The reversal of 1252411720 is 271142521.

It is not an unprimeable number, because it can be changed into a prime (1252411723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198210 + ... + 204430.

It is an arithmetic number, because the mean of its divisors is an integer number (50398200).

Almost surely, 2^1252411720 is an apocalyptic number.

1252411720 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 1252411720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1612742400).

1252411720 is an abundant number, since it is smaller than the sum of its proper divisors (1973073080).

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

1252411720 is a wasteful number, since it uses less digits than its factorization.

1252411720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6958 (or 6954 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 1252411720 is about 35389.4294952603. The cubic root of 1252411720 is about 1077.9096857089.

The spelling of 1252411720 in words is "one billion, two hundred fifty-two million, four hundred eleven thousand, seven hundred twenty".