1252896945687 has 28 divisors (see below), whose sum is σ = 1893277461760. Its totient is φ = 828687682368.

The previous prime is 1252896945647. The next prime is 1252896945691. The reversal of 1252896945687 is 7865496982521.

1252896945687 is a `hidden beast` number, since 1 + 2 + 5 + 2 + 8 + 96 + 9 + 456 + 87 = 666.

It is not a de Polignac number, because 1252896945687 - 2¹² = 1252896941591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252896945647) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 6673762 + ... + 6858927.

Almost surely, 2^{1252896945687} is an apocalyptic number.

1252896945687 is a deficient number, since it is larger than the sum of its proper divisors (640380516073).

1252896945687 is an equidigital number, since it uses as much as digits as its factorization.

1252896945687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13532834 (or 13532819 counting only the distinct ones).

The product of its digits is 522547200, while the sum is 72.

The spelling of 1252896945687 in words is "one trillion, two hundred fifty-two billion, eight hundred ninety-six million, nine hundred forty-five thousand, six hundred eighty-seven".