25865007085 has 8 divisors (see below), whose sum is σ = 32863773816. Its totient is φ = 19474828800.

The previous prime is 25865007061. The next prime is 25865007089. The reversal of 25865007085 is 58070056852.

It can be written as a sum of positive squares in 4 ways, for example, as 509540329 + 25355466756 = 22573^2 + 159234^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-25865007085 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 (25865007089) 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, 152147016 + ... + 152147185.

It is an arithmetic number, because the mean of its divisors is an integer number (4107971727).

Almost surely, 2^25865007085 is an apocalyptic number.

It is an amenable number.

25865007085 is a deficient number, since it is larger than the sum of its proper divisors (6998766731).

25865007085 is a wasteful number, since it uses less digits than its factorization.

25865007085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304294223.

The product of its (nonzero) digits is 672000, while the sum is 46.

The spelling of 25865007085 in words is "twenty-five billion, eight hundred sixty-five million, seven thousand, eighty-five".