25011115243 has 4 divisors (see below), whose sum is σ = 25028330128. Its totient is φ = 24993900360.

The previous prime is 25011115231. The next prime is 25011115267. The reversal of 25011115243 is 34251111052.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25011115243 - 2⁵ = 25011115211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25011115273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8605263 + ... + 8608168.

It is an arithmetic number, because the mean of its divisors is an integer number (6257082532).

Almost surely, 2^25011115243 is an apocalyptic number.

25011115243 is a deficient number, since it is larger than the sum of its proper divisors (17214885).

25011115243 is a wasteful number, since it uses less digits than its factorization.

25011115243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17214884.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 25011115243 its reverse (34251111052), we get a palindrome (59262226295).

The spelling of 25011115243 in words is "twenty-five billion, eleven million, one hundred fifteen thousand, two hundred forty-three".