25127427427 has 2 divisors, whose sum is σ = 25127427428. Its totient is φ = 25127427426.

The previous prime is 25127427407. The next prime is 25127427431. The reversal of 25127427427 is 72472472152.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25127427427 is a prime.

It is not a weakly prime, because it can be changed into another prime (25127427407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12563713713 + 12563713714.

It is an arithmetic number, because the mean of its divisors is an integer number (12563713714).

Almost surely, 2^25127427427 is an apocalyptic number.

25127427427 is a deficient number, since it is larger than the sum of its proper divisors (1).

25127427427 is an equidigital number, since it uses as much as digits as its factorization.

25127427427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 439040, while the sum is 43.

Adding to 25127427427 its reverse (72472472152), we get a palindrome (97599899579).

The spelling of 25127427427 in words is "twenty-five billion, one hundred twenty-seven million, four hundred twenty-seven thousand, four hundred twenty-seven".