25513233500242 has 32 divisors (see below), whose sum is σ = 38374789255920. Its totient is φ = 12721703258880.

The previous prime is 25513233500239. The next prime is 25513233500269. The reversal of 25513233500242 is 24200533231552.

It can be written as a sum of positive squares in 8 ways, for example, as 5355387417241 + 20157846083001 = 2314171^2 + 4489749^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3026835684 + ... + 3026844112.

Almost surely, 2^{25513233500242} is an apocalyptic number.

25513233500242 is a deficient number, since it is larger than the sum of its proper divisors (12861555755678).

25513233500242 is a wasteful number, since it uses less digits than its factorization.

25513233500242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11886.

The product of its (nonzero) digits is 216000, while the sum is 37.

Adding to 25513233500242 its reverse (24200533231552), we get a palindrome (49713766731794).

The spelling of 25513233500242 in words is "twenty-five trillion, five hundred thirteen billion, two hundred thirty-three million, five hundred thousand, two hundred forty-two".