25674242646 has 16 divisors (see below), whose sum is σ = 55298368944. Its totient is φ = 7899766944.

The previous prime is 25674242611. The next prime is 25674242653. The reversal of 25674242646 is 64624247652.

It is a junction number, because it is equal to n+sod(n) for n = 25674242595 and 25674242604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164578401 + ... + 164578556.

It is an arithmetic number, because the mean of its divisors is an integer number (3456148059).

Almost surely, 2^25674242646 is an apocalyptic number.

25674242646 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

25674242646 is an abundant number, since it is smaller than the sum of its proper divisors (29624126298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25674242646 is a wasteful number, since it uses less digits than its factorization.

25674242646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329156975.

The product of its digits is 3870720, while the sum is 48.

The spelling of 25674242646 in words is "twenty-five billion, six hundred seventy-four million, two hundred forty-two thousand, six hundred forty-six".