25641282742 has 8 divisors (see below), whose sum is σ = 38491582536. Its totient is φ = 12810755232.

The previous prime is 25641282713. The next prime is 25641282749. The reversal of 25641282742 is 24728214652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25641282749) 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, 4939828 + ... + 4945015.

It is an arithmetic number, because the mean of its divisors is an integer number (4811447817).

Almost surely, 2^25641282742 is an apocalyptic number.

25641282742 is a deficient number, since it is larger than the sum of its proper divisors (12850299794).

25641282742 is a wasteful number, since it uses less digits than its factorization.

25641282742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9886142.

The product of its digits is 430080, while the sum is 43.

The spelling of 25641282742 in words is "twenty-five billion, six hundred forty-one million, two hundred eighty-two thousand, seven hundred forty-two".