25473709 has 2 divisors, whose sum is σ = 25473710. Its totient is φ = 25473708.

The previous prime is 25473697. The next prime is 25473733. The reversal of 25473709 is 90737452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20958084 + 4515625 = 4578^2 + 2125^2 .

It is a cyclic number.

It is not a de Polignac number, because 25473709 - 2⁵ = 25473677 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25473209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12736854 + 12736855.

It is an arithmetic number, because the mean of its divisors is an integer number (12736855).

Almost surely, 2^25473709 is an apocalyptic number.

It is an amenable number.

25473709 is a deficient number, since it is larger than the sum of its proper divisors (1).

25473709 is an equidigital number, since it uses as much as digits as its factorization.

25473709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 25473709 is about 5047.1486009429. The cubic root of 25473709 is about 294.2370748851.

The spelling of 25473709 in words is "twenty-five million, four hundred seventy-three thousand, seven hundred nine".