25774231025 has 12 divisors (see below), whose sum is σ = 33642154800. Its totient is φ = 19534153680.

The previous prime is 25774231019. The next prime is 25774231033. The reversal of 25774231025 is 52013247752.

It is a de Polignac number, because none of the positive numbers 2^k-25774231025 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25774231025.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27130295 + ... + 27131244.

It is an arithmetic number, because the mean of its divisors is an integer number (2803512900).

Almost surely, 2^25774231025 is an apocalyptic number.

25774231025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25774231025 is a deficient number, since it is larger than the sum of its proper divisors (7867923775).

25774231025 is a wasteful number, since it uses less digits than its factorization.

25774231025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54261568 (or 54261563 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 38.

Adding to 25774231025 its reverse (52013247752), we get a palindrome (77787478777).

The spelling of 25774231025 in words is "twenty-five billion, seven hundred seventy-four million, two hundred thirty-one thousand, twenty-five".