25201226842 has 48 divisors (see below), whose sum is σ = 42538507200. Its totient is φ = 11185416000.

The previous prime is 25201226807. The next prime is 25201227013. The reversal of 25201226842 is 24862210252.

It is a junction number, because it is equal to n+sod(n) for n = 25201226798 and 25201226807.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2150134 + ... + 2161822.

It is an arithmetic number, because the mean of its divisors is an integer number (886218900).

Almost surely, 2^25201226842 is an apocalyptic number.

25201226842 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25201226842 is a deficient number, since it is larger than the sum of its proper divisors (17337280358).

25201226842 is a wasteful number, since it uses less digits than its factorization.

25201226842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11923 (or 11912 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The spelling of 25201226842 in words is "twenty-five billion, two hundred one million, two hundred twenty-six thousand, eight hundred forty-two".