25278251126 has 16 divisors (see below), whose sum is σ = 38663902368. Its totient is φ = 12392251200.

The previous prime is 25278251123. The next prime is 25278251161. The reversal of 25278251126 is 62115287252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25278251123) 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, 466055 + ... + 517458.

It is an arithmetic number, because the mean of its divisors is an integer number (2416493898).

Almost surely, 2^25278251126 is an apocalyptic number.

25278251126 is a deficient number, since it is larger than the sum of its proper divisors (13385651242).

25278251126 is a wasteful number, since it uses less digits than its factorization.

25278251126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983767.

The product of its digits is 134400, while the sum is 41.

The spelling of 25278251126 in words is "twenty-five billion, two hundred seventy-eight million, two hundred fifty-one thousand, one hundred twenty-six".