25796554917 has 16 divisors (see below), whose sum is σ = 39315505152. Its totient is φ = 14738462640.

The previous prime is 25796554913. The next prime is 25796554921. The reversal of 25796554917 is 71945569752.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25796554913) and next prime (25796554921).

It is not a de Polignac number, because 25796554917 - 2² = 25796554913 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25796554913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33748 + ... + 229634.

It is an arithmetic number, because the mean of its divisors is an integer number (2457219072).

Almost surely, 2^25796554917 is an apocalyptic number.

It is an amenable number.

25796554917 is a deficient number, since it is larger than the sum of its proper divisors (13518950235).

25796554917 is a wasteful number, since it uses less digits than its factorization.

25796554917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202168.

The product of its digits is 23814000, while the sum is 60.

The spelling of 25796554917 in words is "twenty-five billion, seven hundred ninety-six million, five hundred fifty-four thousand, nine hundred seventeen".