25954964665 has 8 divisors (see below), whose sum is σ = 35595380160. Its totient is φ = 17797690032.

The previous prime is 25954964663. The next prime is 25954964671. The reversal of 25954964665 is 56646945952.

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 25954964665 - 2¹ = 25954964663 is a prime.

It is a super-2 number, since 2×25954964665² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25954964663) 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, 370785175 + ... + 370785244.

It is an arithmetic number, because the mean of its divisors is an integer number (4449422520).

Almost surely, 2^25954964665 is an apocalyptic number.

It is an amenable number.

25954964665 is a deficient number, since it is larger than the sum of its proper divisors (9640415495).

25954964665 is an equidigital number, since it uses as much as digits as its factorization.

25954964665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741570431.

The product of its digits is 69984000, while the sum is 61.

The spelling of 25954964665 in words is "twenty-five billion, nine hundred fifty-four million, nine hundred sixty-four thousand, six hundred sixty-five".