25684957265 has 8 divisors (see below), whose sum is σ = 33623944128. Its totient is φ = 18679968880.

The previous prime is 25684957261. The next prime is 25684957271. The reversal of 25684957265 is 56275948652.

It is a happy number.

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

It is not a de Polignac number, because 25684957265 - 2² = 25684957261 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25684957261) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 233499557 + ... + 233499666.

It is an arithmetic number, because the mean of its divisors is an integer number (4202993016).

Almost surely, 2^25684957265 is an apocalyptic number.

It is an amenable number.

25684957265 is a deficient number, since it is larger than the sum of its proper divisors (7938986863).

25684957265 is a wasteful number, since it uses less digits than its factorization.

25684957265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466999239.

The product of its digits is 36288000, while the sum is 59.

The spelling of 25684957265 in words is "twenty-five billion, six hundred eighty-four million, nine hundred fifty-seven thousand, two hundred sixty-five".