25238315226 has 32 divisors (see below), whose sum is σ = 53499666240. Its totient is φ = 7909929216.

The previous prime is 25238315203. The next prime is 25238315227. The reversal of 25238315226 is 62251383252.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25238315227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22396 + ... + 225783.

It is an arithmetic number, because the mean of its divisors is an integer number (1671864570).

Almost surely, 2^25238315226 is an apocalyptic number.

25238315226 is an abundant number, since it is smaller than the sum of its proper divisors (28261351014).

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

25238315226 is a wasteful number, since it uses less digits than its factorization.

25238315226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249198.

The product of its digits is 172800, while the sum is 39.

Adding to 25238315226 its reverse (62251383252), we get a palindrome (87489698478).

The spelling of 25238315226 in words is "twenty-five billion, two hundred thirty-eight million, three hundred fifteen thousand, two hundred twenty-six".