25651673 has 2 divisors, whose sum is σ = 25651674. Its totient is φ = 25651672.

The previous prime is 25651667. The next prime is 25651699. The reversal of 25651673 is 37615652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22543504 + 3108169 = 4748^2 + 1763^2 .

It is a cyclic number.

It is not a de Polignac number, because 25651673 - 2¹⁶ = 25586137 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (25651603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12825836 + 12825837.

It is an arithmetic number, because the mean of its divisors is an integer number (12825837).

Almost surely, 2^25651673 is an apocalyptic number.

It is an amenable number.

25651673 is a deficient number, since it is larger than the sum of its proper divisors (1).

25651673 is an equidigital number, since it uses as much as digits as its factorization.

25651673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 35.

The square root of 25651673 is about 5064.7480687592. The cubic root of 25651673 is about 294.9206834544.

The spelling of 25651673 in words is "twenty-five million, six hundred fifty-one thousand, six hundred seventy-three".