42640860025 has 12 divisors (see below), whose sum is σ = 52945095424. Its totient is φ = 34067250000.

The previous prime is 42640859999. The next prime is 42640860061. The reversal of 42640860025 is 52006804624.

It is not a de Polignac number, because 42640860025 - 2⁷ = 42640859897 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1116801 + ... + 1154350.

Almost surely, 2^42640860025 is an apocalyptic number.

It is an amenable number.

42640860025 is a deficient number, since it is larger than the sum of its proper divisors (10304235399).

42640860025 is a wasteful number, since it uses less digits than its factorization.

42640860025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2271912 (or 2271907 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 37.

The spelling of 42640860025 in words is "forty-two billion, six hundred forty million, eight hundred sixty thousand, twenty-five".