25658889641 has 24 divisors (see below), whose sum is σ = 32572408320. Its totient is φ = 19987279200.

The previous prime is 25658889617. The next prime is 25658889673. The reversal of 25658889641 is 14698885652.

It is not a de Polignac number, because 25658889641 - 2⁶ = 25658889577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25658889941) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2161400 + ... + 2173238.

It is an arithmetic number, because the mean of its divisors is an integer number (1357183680).

Almost surely, 2^25658889641 is an apocalyptic number.

It is an amenable number.

25658889641 is a deficient number, since it is larger than the sum of its proper divisors (6913518679).

25658889641 is a wasteful number, since it uses less digits than its factorization.

25658889641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15885 (or 15878 counting only the distinct ones).

The product of its digits is 33177600, while the sum is 62.

The spelling of 25658889641 in words is "twenty-five billion, six hundred fifty-eight million, eight hundred eighty-nine thousand, six hundred forty-one".