2025668691 has 12 divisors (see below), whose sum is σ = 2927785432. Its totient is φ = 1349606016.

The previous prime is 2025668683. The next prime is 2025668693. The reversal of 2025668691 is 1968665202.

2025668691 is a `hidden beast` number, since 2 + 0 + 2 + 566 + 86 + 9 + 1 = 666.

It is not a de Polignac number, because 2025668691 - 2³ = 2025668683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2025668693) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54526 + ... + 83811.

Almost surely, 2^2025668691 is an apocalyptic number.

2025668691 is a deficient number, since it is larger than the sum of its proper divisors (902116741).

2025668691 is a wasteful number, since it uses less digits than its factorization.

2025668691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139970 (or 139967 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 2025668691 is about 45007.4292867300. The cubic root of 2025668691 is about 1265.2882408571.

The spelling of 2025668691 in words is "two billion, twenty-five million, six hundred sixty-eight thousand, six hundred ninety-one".