25105225515708 has 144 divisors (see below), whose sum is σ = 64612720194848. Its totient is φ = 7540001164800.

The previous prime is 25105225515697. The next prime is 25105225515709. The reversal of 25105225515708 is 80751552250152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25105225515709) 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 47 ways as a sum of consecutive naturals, for example, 163227210 + ... + 163380942.

Almost surely, 2^{25105225515708} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25105225515708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32306360097424).

25105225515708 is an abundant number, since it is smaller than the sum of its proper divisors (39507494679140).

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

25105225515708 is a wasteful number, since it uses less digits than its factorization.

25105225515708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154076 (or 153943 counting only the distinct ones).

The product of its (nonzero) digits is 1400000, while the sum is 48.

The spelling of 25105225515708 in words is "twenty-five trillion, one hundred five billion, two hundred twenty-five million, five hundred fifteen thousand, seven hundred eight".