25087943873 has 4 divisors (see below), whose sum is σ = 25088383920. Its totient is φ = 25087503828.

The previous prime is 25087943861. The next prime is 25087943929. The reversal of 25087943873 is 37834978052.

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 not a de Polignac number, because 25087943873 - 2⁶ = 25087943809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25087943813) 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 3 ways as a sum of consecutive naturals, for example, 119063 + ... + 253676.

It is an arithmetic number, because the mean of its divisors is an integer number (6272095980).

Almost surely, 2^25087943873 is an apocalyptic number.

It is an amenable number.

25087943873 is a deficient number, since it is larger than the sum of its proper divisors (440047).

25087943873 is an equidigital number, since it uses as much as digits as its factorization.

25087943873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440046.

The product of its (nonzero) digits is 10160640, while the sum is 56.

The spelling of 25087943873 in words is "twenty-five billion, eighty-seven million, nine hundred forty-three thousand, eight hundred seventy-three".