25565145345 has 16 divisors (see below), whose sum is σ = 45449147520. Its totient is φ = 13634744112.

The previous prime is 25565145341. The next prime is 25565145421. The reversal of 25565145345 is 54354156552.

25565145345 is a `hidden beast` number, since 2 + 5 + 565 + 1 + 45 + 3 + 45 = 666.

It is not a de Polignac number, because 25565145345 - 2² = 25565145341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 25565145345.

It is not an unprimeable number, because it can be changed into a prime (25565145341) 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 15 ways as a sum of consecutive naturals, for example, 94685589 + ... + 94685858.

It is an arithmetic number, because the mean of its divisors is an integer number (2840571720).

Almost surely, 2^25565145345 is an apocalyptic number.

It is an amenable number.

25565145345 is a deficient number, since it is larger than the sum of its proper divisors (19884002175).

25565145345 is a wasteful number, since it uses less digits than its factorization.

25565145345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189371461 (or 189371455 counting only the distinct ones).

The product of its digits is 1800000, while the sum is 45.

The spelling of 25565145345 in words is "twenty-five billion, five hundred sixty-five million, one hundred forty-five thousand, three hundred forty-five".