1252244011520 has 40 divisors (see below), whose sum is σ = 3002450686884. Its totient is φ = 500897603584.

The previous prime is 1252244011517. The next prime is 1252244011573. The reversal of 1252244011520 is 251104422521.

It can be written as a sum of positive squares in 2 ways, for example, as 1030078845184 + 222165166336 = 1014928^2 + 471344^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244576349 + ... + 244581468.

Almost surely, 2^{1252244011520} is an apocalyptic number.

1252244011520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252244011520 is an abundant number, since it is smaller than the sum of its proper divisors (1750206675364).

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

1252244011520 is an frugal number, since it uses more digits than its factorization.

1252244011520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489157840 (or 489157824 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The spelling of 1252244011520 in words is "one trillion, two hundred fifty-two billion, two hundred forty-four million, eleven thousand, five hundred twenty".