25015112442 has 16 divisors (see below), whose sum is σ = 55589138880. Its totient is φ = 8338370796.

The previous prime is 25015112411. The next prime is 25015112453. The reversal of 25015112442 is 24421151052.

It is a happy number.

25015112442 is a `hidden beast` number, since 2 + 501 + 5 + 112 + 4 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231621358 + ... + 231621465.

It is an arithmetic number, because the mean of its divisors is an integer number (3474321180).

Almost surely, 2^25015112442 is an apocalyptic number.

25015112442 is an abundant number, since it is smaller than the sum of its proper divisors (30574026438).

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

25015112442 is a wasteful number, since it uses less digits than its factorization.

25015112442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463242834 (or 463242828 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 25015112442 its reverse (24421151052), we get a palindrome (49436263494).

The spelling of 25015112442 in words is "twenty-five billion, fifteen million, one hundred twelve thousand, four hundred forty-two".