25445653 has 2 divisors, whose sum is σ = 25445654. Its totient is φ = 25445652.

The previous prime is 25445647. The next prime is 25445669. The reversal of 25445653 is 35654452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20857489 + 4588164 = 4567^2 + 2142^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25445653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25445633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12722826 + 12722827.

It is an arithmetic number, because the mean of its divisors is an integer number (12722827).

Almost surely, 2^25445653 is an apocalyptic number.

It is an amenable number.

25445653 is a deficient number, since it is larger than the sum of its proper divisors (1).

25445653 is an equidigital number, since it uses as much as digits as its factorization.

25445653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72000, while the sum is 34.

The square root of 25445653 is about 5044.3684441167. The cubic root of 25445653 is about 294.1290138266.

The spelling of 25445653 in words is "twenty-five million, four hundred forty-five thousand, six hundred fifty-three".