25816492801 has 32 divisors (see below), whose sum is σ = 29915642880. Its totient is φ = 22032648000.

The previous prime is 25816492799. The next prime is 25816492811. The reversal of 25816492801 is 10829461852.

It is not a de Polignac number, because 25816492801 - 2¹ = 25816492799 is a prime.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (25816492811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17766991 + ... + 17768443.

It is an arithmetic number, because the mean of its divisors is an integer number (934863840).

Almost surely, 2^25816492801 is an apocalyptic number.

It is an amenable number.

25816492801 is a deficient number, since it is larger than the sum of its proper divisors (4099150079).

25816492801 is a wasteful number, since it uses less digits than its factorization.

25816492801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197.

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 25816492801 in words is "twenty-five billion, eight hundred sixteen million, four hundred ninety-two thousand, eight hundred one".