25534172107 has 2 divisors, whose sum is σ = 25534172108. Its totient is φ = 25534172106.

The previous prime is 25534172077. The next prime is 25534172129. The reversal of 25534172107 is 70127143552.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25534172107 is a prime.

It is not a weakly prime, because it can be changed into another prime (25534172197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12767086053 + 12767086054.

It is an arithmetic number, because the mean of its divisors is an integer number (12767086054).

Almost surely, 2^25534172107 is an apocalyptic number.

25534172107 is a deficient number, since it is larger than the sum of its proper divisors (1).

25534172107 is an equidigital number, since it uses as much as digits as its factorization.

25534172107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58800, while the sum is 37.

The spelling of 25534172107 in words is "twenty-five billion, five hundred thirty-four million, one hundred seventy-two thousand, one hundred seven".