20252640695 has 32 divisors (see below), whose sum is σ = 28077757056. Its totient is φ = 13736448000.

The previous prime is 20252640647. The next prime is 20252640697. The reversal of 20252640695 is 59604625202.

It is not a de Polignac number, because 20252640695 - 2⁶ = 20252640631 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 (20252640697) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4667567 + ... + 4671903.

It is an arithmetic number, because the mean of its divisors is an integer number (877429908).

Almost surely, 2^20252640695 is an apocalyptic number.

20252640695 is a deficient number, since it is larger than the sum of its proper divisors (7825116361).

20252640695 is a wasteful number, since it uses less digits than its factorization.

20252640695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5771.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 20252640695 in words is "twenty billion, two hundred fifty-two million, six hundred forty thousand, six hundred ninety-five".