25823789278 has 16 divisors (see below), whose sum is σ = 44566466400. Its totient is φ = 10993059936.

The previous prime is 25823789273. The next prime is 25823789309. The reversal of 25823789278 is 87298732852.

It is a super-2 number, since 2×25823789278² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25823789273) by changing a digit.

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, 6187701 + ... + 6191872.

It is an arithmetic number, because the mean of its divisors is an integer number (2785404150).

Almost surely, 2^25823789278 is an apocalyptic number.

25823789278 is a deficient number, since it is larger than the sum of its proper divisors (18742677122).

25823789278 is a wasteful number, since it uses less digits than its factorization.

25823789278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12379731.

The product of its digits is 27095040, while the sum is 61.

The spelling of 25823789278 in words is "twenty-five billion, eight hundred twenty-three million, seven hundred eighty-nine thousand, two hundred seventy-eight".