25893419138 has 16 divisors (see below), whose sum is σ = 40420054080. Its totient is φ = 12425414736.

The previous prime is 25893419137. The next prime is 25893419161. The reversal of 25893419138 is 83191439852.

It is a super-2 number, since 2×25893419138² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25893419138.

It is not an unprimeable number, because it can be changed into a prime (25893419137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1326956 + ... + 1346327.

It is an arithmetic number, because the mean of its divisors is an integer number (2526253380).

Almost surely, 2^25893419138 is an apocalyptic number.

25893419138 is a deficient number, since it is larger than the sum of its proper divisors (14526634942).

25893419138 is a wasteful number, since it uses less digits than its factorization.

25893419138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2673481.

The product of its digits is 1866240, while the sum is 53.

The spelling of 25893419138 in words is "twenty-five billion, eight hundred ninety-three million, four hundred nineteen thousand, one hundred thirty-eight".