25426374198427 has 2 divisors, whose sum is σ = 25426374198428. Its totient is φ = 25426374198426.

The previous prime is 25426374198353. The next prime is 25426374198469. The reversal of 25426374198427 is 72489147362452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25426374198427 - 2¹⁵ = 25426374165659 is a prime.

It is not a weakly prime, because it can be changed into another prime (25426374198227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12713187099213 + 12713187099214.

It is an arithmetic number, because the mean of its divisors is an integer number (12713187099214).

Almost surely, 2^{25426374198427} is an apocalyptic number.

25426374198427 is a deficient number, since it is larger than the sum of its proper divisors (1).

25426374198427 is an equidigital number, since it uses as much as digits as its factorization.

25426374198427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162570240, while the sum is 64.

The spelling of 25426374198427 in words is "twenty-five trillion, four hundred twenty-six billion, three hundred seventy-four million, one hundred ninety-eight thousand, four hundred twenty-seven".