25309916086 has 32 divisors (see below), whose sum is σ = 48233299968. Its totient is φ = 9689721120.

The previous prime is 25309916063. The next prime is 25309916101. The reversal of 25309916086 is 68061990352.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2237350 + ... + 2248633.

It is an arithmetic number, because the mean of its divisors is an integer number (1507290624).

Almost surely, 2^25309916086 is an apocalyptic number.

25309916086 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

25309916086 is a deficient number, since it is larger than the sum of its proper divisors (22923383882).

25309916086 is a wasteful number, since it uses less digits than its factorization.

25309916086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4486036.

The product of its (nonzero) digits is 699840, while the sum is 49.

The spelling of 25309916086 in words is "twenty-five billion, three hundred nine million, nine hundred sixteen thousand, eighty-six".