1252450432520 has 128 divisors (see below), whose sum is σ = 3288541766400. Its totient is φ = 420436832256.

The previous prime is 1252450432517. The next prime is 1252450432543. The reversal of 1252450432520 is 252340542521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

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, 2576651 + ... + 3023909.

It is an arithmetic number, because the mean of its divisors is an integer number (25691732550).

Almost surely, 2^{1252450432520} is an apocalyptic number.

1252450432520 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 1252450432520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1644270883200).

1252450432520 is an abundant number, since it is smaller than the sum of its proper divisors (2036091333880).

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

1252450432520 is a wasteful number, since it uses less digits than its factorization.

1252450432520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447487 (or 447483 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 35.

The spelling of 1252450432520 in words is "one trillion, two hundred fifty-two billion, four hundred fifty million, four hundred thirty-two thousand, five hundred twenty".