25065576155 has 4 divisors (see below), whose sum is σ = 30078691392. Its totient is φ = 20052460920.

The previous prime is 25065576113. The next prime is 25065576181. The reversal of 25065576155 is 55167556052.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-25065576155 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2506557611 + ... + 2506557620.

It is an arithmetic number, because the mean of its divisors is an integer number (7519672848).

Almost surely, 2^25065576155 is an apocalyptic number.

25065576155 is a deficient number, since it is larger than the sum of its proper divisors (5013115237).

25065576155 is an equidigital number, since it uses as much as digits as its factorization.

25065576155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5013115236.

The product of its (nonzero) digits is 1575000, while the sum is 47.

The spelling of 25065576155 in words is "twenty-five billion, sixty-five million, five hundred seventy-six thousand, one hundred fifty-five".