20125115278 has 16 divisors (see below), whose sum is σ = 30517159680. Its totient is φ = 9953263800.

The previous prime is 20125115261. The next prime is 20125115279. The reversal of 20125115278 is 87251152102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20125115279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58228 + ... + 208903.

It is an arithmetic number, because the mean of its divisors is an integer number (1907322480).

Almost surely, 2^20125115278 is an apocalyptic number.

20125115278 is a deficient number, since it is larger than the sum of its proper divisors (10392044402).

20125115278 is a wasteful number, since it uses less digits than its factorization.

20125115278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267543.

The product of its (nonzero) digits is 11200, while the sum is 34.

The spelling of 20125115278 in words is "twenty billion, one hundred twenty-five million, one hundred fifteen thousand, two hundred seventy-eight".