25154442422 has 4 divisors (see below), whose sum is σ = 37731663636. Its totient is φ = 12577221210.

The previous prime is 25154442371. The next prime is 25154442427. The reversal of 25154442422 is 22424445152.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25154442427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6288610604 + ... + 6288610607.

It is an arithmetic number, because the mean of its divisors is an integer number (9432915909).

Almost surely, 2^25154442422 is an apocalyptic number.

25154442422 is a deficient number, since it is larger than the sum of its proper divisors (12577221214).

25154442422 is a wasteful number, since it uses less digits than its factorization.

25154442422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12577221213.

The product of its digits is 102400, while the sum is 35.

Adding to 25154442422 its reverse (22424445152), we get a palindrome (47578887574).

The spelling of 25154442422 in words is "twenty-five billion, one hundred fifty-four million, four hundred forty-two thousand, four hundred twenty-two".