25916408761 has 8 divisors (see below), whose sum is σ = 27447305760. Its totient is φ = 24386223168.

The previous prime is 25916408741. The next prime is 25916408773. The reversal of 25916408761 is 16780461952.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25916408761 - 2⁵ = 25916408729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25916408741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101911 + ... + 249436.

It is an arithmetic number, because the mean of its divisors is an integer number (3430913220).

Almost surely, 2^25916408761 is an apocalyptic number.

It is an amenable number.

25916408761 is a deficient number, since it is larger than the sum of its proper divisors (1530896999).

25916408761 is a wasteful number, since it uses less digits than its factorization.

25916408761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355703.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 25916408761 in words is "twenty-five billion, nine hundred sixteen million, four hundred eight thousand, seven hundred sixty-one".