25537375427 has 2 divisors, whose sum is σ = 25537375428. Its totient is φ = 25537375426.

The previous prime is 25537375399. The next prime is 25537375441. The reversal of 25537375427 is 72457373552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25537375427 - 2²² = 25533181123 is a prime.

It is not a weakly prime, because it can be changed into another prime (25537375477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12768687713 + 12768687714.

It is an arithmetic number, because the mean of its divisors is an integer number (12768687714).

Almost surely, 2^25537375427 is an apocalyptic number.

25537375427 is a deficient number, since it is larger than the sum of its proper divisors (1).

25537375427 is an equidigital number, since it uses as much as digits as its factorization.

25537375427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6174000, while the sum is 50.

The spelling of 25537375427 in words is "twenty-five billion, five hundred thirty-seven million, three hundred seventy-five thousand, four hundred twenty-seven".