25224555238 has 4 divisors (see below), whose sum is σ = 37836832860. Its totient is φ = 12612277618.

The previous prime is 25224555229. The next prime is 25224555253. The reversal of 25224555238 is 83255542252.

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

It is a junction number, because it is equal to n+sod(n) for n = 25224555194 and 25224555203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6306138808 + ... + 6306138811.

It is an arithmetic number, because the mean of its divisors is an integer number (9459208215).

Almost surely, 2^25224555238 is an apocalyptic number.

25224555238 is a deficient number, since it is larger than the sum of its proper divisors (12612277622).

25224555238 is a wasteful number, since it uses less digits than its factorization.

25224555238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12612277621.

The product of its digits is 960000, while the sum is 43.

The spelling of 25224555238 in words is "twenty-five billion, two hundred twenty-four million, five hundred fifty-five thousand, two hundred thirty-eight".