25255205747 has 2 divisors, whose sum is σ = 25255205748. Its totient is φ = 25255205746.

The previous prime is 25255205693. The next prime is 25255205803. The reversal of 25255205747 is 74750255252.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25255205747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25255205698 and 25255205707.

It is not a weakly prime, because it can be changed into another prime (25255205047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12627602873 + 12627602874.

It is an arithmetic number, because the mean of its divisors is an integer number (12627602874).

Almost surely, 2^25255205747 is an apocalyptic number.

25255205747 is a deficient number, since it is larger than the sum of its proper divisors (1).

25255205747 is an equidigital number, since it uses as much as digits as its factorization.

25255205747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 980000, while the sum is 44.

The spelling of 25255205747 in words is "twenty-five billion, two hundred fifty-five million, two hundred five thousand, seven hundred forty-seven".