25682065465 has 12 divisors (see below), whose sum is σ = 35850067236. Its totient is φ = 17610559008.

The previous prime is 25682065459. The next prime is 25682065477. The reversal of 25682065465 is 56456028652.

It can be written as a sum of positive squares in 2 ways, for example, as 17127480384 + 8554585081 = 130872^2 + 92491^2 .

It is not a de Polignac number, because 25682065465 - 2⁵ = 25682065433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52412134 + ... + 52412623.

It is an arithmetic number, because the mean of its divisors is an integer number (2987505603).

Almost surely, 2^25682065465 is an apocalyptic number.

It is an amenable number.

25682065465 is a deficient number, since it is larger than the sum of its proper divisors (10168001771).

25682065465 is a wasteful number, since it uses less digits than its factorization.

25682065465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104824776 (or 104824769 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 49.

The spelling of 25682065465 in words is "twenty-five billion, six hundred eighty-two million, sixty-five thousand, four hundred sixty-five".