25566405313 has 8 divisors (see below), whose sum is σ = 25967637632. Its totient is φ = 25165750896.

The previous prime is 25566405287. The next prime is 25566405317. The reversal of 25566405313 is 31350466552.

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 25566405313 - 2¹⁷ = 25566274241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25566405317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54870 + ... + 232687.

It is an arithmetic number, because the mean of its divisors is an integer number (3245954704).

Almost surely, 2^25566405313 is an apocalyptic number.

It is an amenable number.

25566405313 is a deficient number, since it is larger than the sum of its proper divisors (401232319).

25566405313 is a wasteful number, since it uses less digits than its factorization.

25566405313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288951.

The product of its (nonzero) digits is 324000, while the sum is 40.

The spelling of 25566405313 in words is "twenty-five billion, five hundred sixty-six million, four hundred five thousand, three hundred thirteen".