25926941861 has 4 divisors (see below), whose sum is σ = 25933581792. Its totient is φ = 25920301932.

The previous prime is 25926941801. The next prime is 25926941869. The reversal of 25926941861 is 16814962952.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25926941861 - 2²⁶ = 25859832997 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 (25926941869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3314105 + ... + 3321918.

It is an arithmetic number, because the mean of its divisors is an integer number (6483395448).

Almost surely, 2^25926941861 is an apocalyptic number.

It is an amenable number.

25926941861 is a deficient number, since it is larger than the sum of its proper divisors (6639931).

25926941861 is an equidigital number, since it uses as much as digits as its factorization.

25926941861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6639930.

The product of its digits is 1866240, while the sum is 53.

The spelling of 25926941861 in words is "twenty-five billion, nine hundred twenty-six million, nine hundred forty-one thousand, eight hundred sixty-one".