25775173 has 2 divisors, whose sum is σ = 25775174. Its totient is φ = 25775172.

The previous prime is 25775149. The next prime is 25775207. The reversal of 25775173 is 37157752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25230529 + 544644 = 5023^2 + 738^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25775173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25775143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12887586 + 12887587.

It is an arithmetic number, because the mean of its divisors is an integer number (12887587).

Almost surely, 2^25775173 is an apocalyptic number.

It is an amenable number.

25775173 is a deficient number, since it is larger than the sum of its proper divisors (1).

25775173 is an equidigital number, since it uses as much as digits as its factorization.

25775173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51450, while the sum is 37.

The square root of 25775173 is about 5076.9255460367. The cubic root of 25775173 is about 295.3932245355.

It can be divided in two parts, 2577 and 5173, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 25775173 in words is "twenty-five million, seven hundred seventy-five thousand, one hundred seventy-three".