1252013637240 has 96 divisors (see below), whose sum is σ = 4069184605200. Its totient is φ = 333858792960.

The previous prime is 1252013637197. The next prime is 1252013637263. The reversal of 1252013637240 is 427363102521.

1252013637240 is a `hidden beast` number, since 1 + 2 + 5 + 2 + 0 + 13 + 637 + 2 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1252013637195 and 1252013637204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17666196 + ... + 17736924.

Almost surely, 2^{1252013637240} is an apocalyptic number.

1252013637240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1252013637240 is an abundant number, since it is smaller than the sum of its proper divisors (2817170967960).

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

1252013637240 is a wasteful number, since it uses less digits than its factorization.

1252013637240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119917 (or 119910 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

Adding to 1252013637240 its reverse (427363102521), we get a palindrome (1679376739761).

The spelling of 1252013637240 in words is "one trillion, two hundred fifty-two billion, thirteen million, six hundred thirty-seven thousand, two hundred forty".