25641026158 has 16 divisors (see below), whose sum is σ = 42463564416. Its totient is φ = 11514589240.

The previous prime is 25641026143. The next prime is 25641026171. The reversal of 25641026158 is 85162014652.

It is a self number, because there is not a number n which added to its sum of digits gives 25641026158.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7019266 + ... + 7022917.

It is an arithmetic number, because the mean of its divisors is an integer number (2653972776).

Almost surely, 2^25641026158 is an apocalyptic number.

25641026158 is a deficient number, since it is larger than the sum of its proper divisors (16822538258).

25641026158 is a wasteful number, since it uses less digits than its factorization.

25641026158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14042279.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 25641026158 in words is "twenty-five billion, six hundred forty-one million, twenty-six thousand, one hundred fifty-eight".