25745332565 has 8 divisors (see below), whose sum is σ = 31355509920. Its totient is φ = 20288858832.

The previous prime is 25745332537. The next prime is 25745332567. The reversal of 25745332565 is 56523354752.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25745332565 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25745332567) 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, 38425535 + ... + 38426204.

It is an arithmetic number, because the mean of its divisors is an integer number (3919438740).

Almost surely, 2^25745332565 is an apocalyptic number.

It is an amenable number.

25745332565 is a deficient number, since it is larger than the sum of its proper divisors (5610177355).

25745332565 is an equidigital number, since it uses as much as digits as its factorization.

25745332565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76851811.

The product of its digits is 3780000, while the sum is 47.

The spelling of 25745332565 in words is "twenty-five billion, seven hundred forty-five million, three hundred thirty-two thousand, five hundred sixty-five".