25724674673 has 4 divisors (see below), whose sum is σ = 25725602160. Its totient is φ = 25723747188.

The previous prime is 25724674643. The next prime is 25724674681. The reversal of 25724674673 is 37647642752.

It is a happy number.

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 25724674673 - 2¹² = 25724670577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25724674643) 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, 420815 + ... + 478052.

It is an arithmetic number, because the mean of its divisors is an integer number (6431400540).

Almost surely, 2^25724674673 is an apocalyptic number.

It is an amenable number.

25724674673 is a deficient number, since it is larger than the sum of its proper divisors (927487).

25724674673 is an equidigital number, since it uses as much as digits as its factorization.

25724674673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927486.

The product of its digits is 11854080, while the sum is 53.

The spelling of 25724674673 in words is "twenty-five billion, seven hundred twenty-four million, six hundred seventy-four thousand, six hundred seventy-three".