25374342247 has 4 divisors (see below), whose sum is σ = 25475435496. Its totient is φ = 25273249000.

The previous prime is 25374342197. The next prime is 25374342289. The reversal of 25374342247 is 74224347352.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25374342247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25374342047) 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, 50546248 + ... + 50546749.

It is an arithmetic number, because the mean of its divisors is an integer number (6368858874).

Almost surely, 2^25374342247 is an apocalyptic number.

25374342247 is a deficient number, since it is larger than the sum of its proper divisors (101093249).

25374342247 is a wasteful number, since it uses less digits than its factorization.

25374342247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101093248.

The product of its digits is 1128960, while the sum is 43.

Adding to 25374342247 its reverse (74224347352), we get a palindrome (99598689599).

The spelling of 25374342247 in words is "twenty-five billion, three hundred seventy-four million, three hundred forty-two thousand, two hundred forty-seven".