25056542673 has 20 divisors (see below), whose sum is σ = 37515459520. Its totient is φ = 16666287192.

The previous prime is 25056542669. The next prime is 25056542699. The reversal of 25056542673 is 37624565052.

25056542673 is a `hidden beast` number, since 2 + 50 + 56 + 542 + 6 + 7 + 3 = 666.

It is not a de Polignac number, because 25056542673 - 2² = 25056542669 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25056542603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 316765 + ... + 387882.

It is an arithmetic number, because the mean of its divisors is an integer number (1875772976).

Almost surely, 2^25056542673 is an apocalyptic number.

It is an amenable number.

25056542673 is a deficient number, since it is larger than the sum of its proper divisors (12458916847).

25056542673 is an equidigital number, since it uses as much as digits as its factorization.

25056542673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705098 (or 705089 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 45.

The spelling of 25056542673 in words is "twenty-five billion, fifty-six million, five hundred forty-two thousand, six hundred seventy-three".