25427405873 has 4 divisors (see below), whose sum is σ = 25462382400. Its totient is φ = 25392429348.

The previous prime is 25427405851. The next prime is 25427405933. The reversal of 25427405873 is 37850472452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25427405873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25427405273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17487173 + ... + 17488626.

It is an arithmetic number, because the mean of its divisors is an integer number (6365595600).

Almost surely, 2^25427405873 is an apocalyptic number.

It is an amenable number.

25427405873 is a deficient number, since it is larger than the sum of its proper divisors (34976527).

25427405873 is an equidigital number, since it uses as much as digits as its factorization.

25427405873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34976526.

The product of its (nonzero) digits is 1881600, while the sum is 47.

The spelling of 25427405873 in words is "twenty-five billion, four hundred twenty-seven million, four hundred five thousand, eight hundred seventy-three".