25198070118 has 64 divisors (see below), whose sum is σ = 56704112640. Its totient is φ = 7406771328.

The previous prime is 25198070099. The next prime is 25198070119. The reversal of 25198070118 is 81107089152.

It is a self number, because there is not a number n which added to its sum of digits gives 25198070118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25198070119) 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 31 ways as a sum of consecutive naturals, for example, 1478755 + ... + 1495697.

It is an arithmetic number, because the mean of its divisors is an integer number (886001760).

Almost surely, 2^25198070118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25198070118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28352056320).

25198070118 is an abundant number, since it is smaller than the sum of its proper divisors (31506042522).

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

25198070118 is a wasteful number, since it uses less digits than its factorization.

25198070118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17813.

The product of its (nonzero) digits is 40320, while the sum is 42.

The spelling of 25198070118 in words is "twenty-five billion, one hundred ninety-eight million, seventy thousand, one hundred eighteen".