25434491627 has 2 divisors, whose sum is σ = 25434491628. Its totient is φ = 25434491626.

The previous prime is 25434491591. The next prime is 25434491629. The reversal of 25434491627 is 72619443452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25434491627 - 2¹⁰ = 25434490603 is a prime.

Together with 25434491629, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25434491629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12717245813 + 12717245814.

It is an arithmetic number, because the mean of its divisors is an integer number (12717245814).

Almost surely, 2^25434491627 is an apocalyptic number.

25434491627 is a deficient number, since it is larger than the sum of its proper divisors (1).

25434491627 is an equidigital number, since it uses as much as digits as its factorization.

25434491627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 47.

The spelling of 25434491627 in words is "twenty-five billion, four hundred thirty-four million, four hundred ninety-one thousand, six hundred twenty-seven".