25673443047 has 42 divisors (see below), whose sum is σ = 44011113992. Its totient is φ = 14663998296.

The previous prime is 25673443001. The next prime is 25673443049. The reversal of 25673443047 is 74034437652.

25673443047 is a `hidden beast` number, since 2 + 567 + 3 + 4 + 43 + 0 + 47 = 666.

It is not a de Polignac number, because 25673443047 - 2⁸ = 25673442791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25673442993 and 25673443011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25673443049) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 11444908 + ... + 11447150.

Almost surely, 2^25673443047 is an apocalyptic number.

25673443047 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

25673443047 is a deficient number, since it is larger than the sum of its proper divisors (18337670945).

25673443047 is an frugal number, since it uses more digits than its factorization.

25673443047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4511 (or 2253 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 45.

The spelling of 25673443047 in words is "twenty-five billion, six hundred seventy-three million, four hundred forty-three thousand, forty-seven".