25423676678 has 4 divisors (see below), whose sum is σ = 38135515020. Its totient is φ = 12711838338.

The previous prime is 25423676669. The next prime is 25423676683. The reversal of 25423676678 is 87667632452.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×25423676678² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6355919168 + ... + 6355919171.

It is an arithmetic number, because the mean of its divisors is an integer number (9533878755).

Almost surely, 2^25423676678 is an apocalyptic number.

25423676678 is a deficient number, since it is larger than the sum of its proper divisors (12711838342).

25423676678 is a wasteful number, since it uses less digits than its factorization.

25423676678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12711838341.

The product of its digits is 20321280, while the sum is 56.

The spelling of 25423676678 in words is "twenty-five billion, four hundred twenty-three million, six hundred seventy-six thousand, six hundred seventy-eight".