25880166511 has 8 divisors (see below), whose sum is σ = 26853436544. Its totient is φ = 24915548160.

The previous prime is 25880166479. The next prime is 25880166593. The reversal of 25880166511 is 11566108852.

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

It is not a de Polignac number, because 25880166511 - 2⁵ = 25880166479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25880164511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2156826 + ... + 2168791.

It is an arithmetic number, because the mean of its divisors is an integer number (3356679568).

Almost surely, 2^25880166511 is an apocalyptic number.

25880166511 is a deficient number, since it is larger than the sum of its proper divisors (973270033).

25880166511 is a wasteful number, since it uses less digits than its factorization.

25880166511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4325841.

The product of its (nonzero) digits is 115200, while the sum is 43.

The spelling of 25880166511 in words is "twenty-five billion, eight hundred eighty million, one hundred sixty-six thousand, five hundred eleven".