25500113242 has 8 divisors (see below), whose sum is σ = 38257683732. Its totient is φ = 12747552000.

The previous prime is 25500113209. The next prime is 25500113251. The reversal of 25500113242 is 24231100552.

It can be written as a sum of positive squares in 2 ways, for example, as 18544720041 + 6955393201 = 136179^2 + 83399^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1239559 + ... + 1259962.

Almost surely, 2^25500113242 is an apocalyptic number.

25500113242 is a deficient number, since it is larger than the sum of its proper divisors (12757570490).

25500113242 is a wasteful number, since it uses less digits than its factorization.

25500113242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504624.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 25500113242 its reverse (24231100552), we get a palindrome (49731213794).

The spelling of 25500113242 in words is "twenty-five billion, five hundred million, one hundred thirteen thousand, two hundred forty-two".