25542136671 has 8 divisors (see below), whose sum is σ = 34698751920. Its totient is φ = 16706806272.

The previous prime is 25542136619. The next prime is 25542136691. The reversal of 25542136671 is 17663124552.

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

It is not a de Polignac number, because 25542136671 - 2¹¹ = 25542134623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25542136691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80321026 + ... + 80321343.

It is an arithmetic number, because the mean of its divisors is an integer number (4337343990).

Almost surely, 2^25542136671 is an apocalyptic number.

25542136671 is a deficient number, since it is larger than the sum of its proper divisors (9156615249).

25542136671 is a wasteful number, since it uses less digits than its factorization.

25542136671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160642425.

The product of its digits is 302400, while the sum is 42.

The spelling of 25542136671 in words is "twenty-five billion, five hundred forty-two million, one hundred thirty-six thousand, six hundred seventy-one".