1252715520 has 352 divisors, whose sum is σ = 4678557696. Its totient is φ = 280166400.

The previous prime is 1252715501. The next prime is 1252715531. The reversal of 1252715520 is 255172521.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6558625 + ... + 6558815.

Almost surely, 2^1252715520 is an apocalyptic number.

1252715520 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 1252715520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2339278848).

1252715520 is an abundant number, since it is smaller than the sum of its proper divisors (3425842176).

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

1252715520 is a wasteful number, since it uses less digits than its factorization.

1252715520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 30.

The square root of 1252715520 is about 35393.7214771208. The cubic root of 1252715520 is about 1077.9968355608.

The spelling of 1252715520 in words is "one billion, two hundred fifty-two million, seven hundred fifteen thousand, five hundred twenty".