25709049127 has 2 divisors, whose sum is σ = 25709049128. Its totient is φ = 25709049126.

The previous prime is 25709049059. The next prime is 25709049133. The reversal of 25709049127 is 72194090752.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25709049127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25709049137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12854524563 + 12854524564.

It is an arithmetic number, because the mean of its divisors is an integer number (12854524564).

Almost surely, 2^25709049127 is an apocalyptic number.

25709049127 is a deficient number, since it is larger than the sum of its proper divisors (1).

25709049127 is an equidigital number, since it uses as much as digits as its factorization.

25709049127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 25709049127 in words is "twenty-five billion, seven hundred nine million, forty-nine thousand, one hundred twenty-seven".