25565145411 has 64 divisors (see below), whose sum is σ = 41153978880. Its totient is φ = 13945374720.

The previous prime is 25565145341. The next prime is 25565145421. The reversal of 25565145411 is 11454156552.

It is not a de Polignac number, because 25565145411 - 2⁷ = 25565145283 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 25565145411.

It is not an unprimeable number, because it can be changed into a prime (25565145421) 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 63 ways as a sum of consecutive naturals, for example, 2173416 + ... + 2185146.

It is an arithmetic number, because the mean of its divisors is an integer number (643030920).

Almost surely, 2^25565145411 is an apocalyptic number.

25565145411 is a deficient number, since it is larger than the sum of its proper divisors (15588833469).

25565145411 is a wasteful number, since it uses less digits than its factorization.

25565145411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11956.

The product of its digits is 120000, while the sum is 39.

The spelling of 25565145411 in words is "twenty-five billion, five hundred sixty-five million, one hundred forty-five thousand, four hundred eleven".