25140351318 has 16 divisors (see below), whose sum is σ = 50647716720. Its totient is φ = 8318948096.

The previous prime is 25140351311. The next prime is 25140351323. The reversal of 25140351318 is 81315304152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25140351311) 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, 15291363 + ... + 15293006.

It is an arithmetic number, because the mean of its divisors is an integer number (3165482295).

Almost surely, 2^25140351318 is an apocalyptic number.

25140351318 is an abundant number, since it is smaller than the sum of its proper divisors (25507365402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25140351318 is a wasteful number, since it uses less digits than its factorization.

25140351318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30584511.

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 25140351318 in words is "twenty-five billion, one hundred forty million, three hundred fifty-one thousand, three hundred eighteen".