25685584315 has 16 divisors (see below), whose sum is σ = 31148365248. Its totient is φ = 20331697536.

The previous prime is 25685584313. The next prime is 25685584339. The reversal of 25685584315 is 51348558652.

It is a cyclic number.

It is not a de Polignac number, because 25685584315 - 2¹ = 25685584313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25685584313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604137 + ... + 645253.

It is an arithmetic number, because the mean of its divisors is an integer number (1946772828).

Almost surely, 2^25685584315 is an apocalyptic number.

25685584315 is a deficient number, since it is larger than the sum of its proper divisors (5462780933).

25685584315 is a wasteful number, since it uses less digits than its factorization.

25685584315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42438.

The product of its digits is 5760000, while the sum is 52.

The spelling of 25685584315 in words is "twenty-five billion, six hundred eighty-five million, five hundred eighty-four thousand, three hundred fifteen".