1252762637640 has 32 divisors (see below), whose sum is σ = 3758287913280. Its totient is φ = 334070036672.

The previous prime is 1252762637639. The next prime is 1252762637663. The reversal of 1252762637640 is 467362672521.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5219844204 + ... + 5219844443.

It is an arithmetic number, because the mean of its divisors is an integer number (117446497290).

Almost surely, 2^{1252762637640} is an apocalyptic number.

1252762637640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252762637640 is an abundant number, since it is smaller than the sum of its proper divisors (2505525275640).

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

1252762637640 is a wasteful number, since it uses less digits than its factorization.

1252762637640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10439688661 (or 10439688657 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 51.

The spelling of 1252762637640 in words is "one trillion, two hundred fifty-two billion, seven hundred sixty-two million, six hundred thirty-seven thousand, six hundred forty".