25031124427 has 2 divisors, whose sum is σ = 25031124428. Its totient is φ = 25031124426.

The previous prime is 25031124407. The next prime is 25031124493. The reversal of 25031124427 is 72442113052.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25031124427 - 2⁷ = 25031124299 is a prime.

It is not a weakly prime, because it can be changed into another prime (25031124407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12515562213 + 12515562214.

It is an arithmetic number, because the mean of its divisors is an integer number (12515562214).

Almost surely, 2^25031124427 is an apocalyptic number.

25031124427 is a deficient number, since it is larger than the sum of its proper divisors (1).

25031124427 is an equidigital number, since it uses as much as digits as its factorization.

25031124427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 31.

Adding to 25031124427 its reverse (72442113052), we get a palindrome (97473237479).

The spelling of 25031124427 in words is "twenty-five billion, thirty-one million, one hundred twenty-four thousand, four hundred twenty-seven".