25213108475918 has 32 divisors (see below), whose sum is σ = 42848989930080. Its totient is φ = 11025471029760.

The previous prime is 25213108475911. The next prime is 25213108475963. The reversal of 25213108475918 is 81957480131252.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25213108475911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173940671 + ... + 174085562.

It is an arithmetic number, because the mean of its divisors is an integer number (1339030935315).

Almost surely, 2^{25213108475918} is an apocalyptic number.

25213108475918 is a deficient number, since it is larger than the sum of its proper divisors (17635881454162).

25213108475918 is a wasteful number, since it uses less digits than its factorization.

25213108475918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348026372.

The product of its (nonzero) digits is 4838400, while the sum is 56.

The spelling of 25213108475918 in words is "twenty-five trillion, two hundred thirteen billion, one hundred eight million, four hundred seventy-five thousand, nine hundred eighteen".