25685038261 has 8 divisors (see below), whose sum is σ = 27480111200. Its totient is φ = 23934288240.

The previous prime is 25685038259. The next prime is 25685038271. The reversal of 25685038261 is 16283058652.

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 25685038261 - 2¹ = 25685038259 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 (25685038271) 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, 11079531 + ... + 11081848.

It is an arithmetic number, because the mean of its divisors is an integer number (3435013900).

Almost surely, 2^25685038261 is an apocalyptic number.

It is an amenable number.

25685038261 is a deficient number, since it is larger than the sum of its proper divisors (1795072939).

25685038261 is a wasteful number, since it uses less digits than its factorization.

25685038261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22161459.

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 25685038261 in words is "twenty-five billion, six hundred eighty-five million, thirty-eight thousand, two hundred sixty-one".