25520653 has 2 divisors, whose sum is σ = 25520654. Its totient is φ = 25520652.

The previous prime is 25520647. The next prime is 25520669. The reversal of 25520653 is 35602552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25431849 + 88804 = 5043^2 + 298^2 .

It is a cyclic number.

It is not a de Polignac number, because 25520653 - 2⁹ = 25520141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25520623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12760326 + 12760327.

It is an arithmetic number, because the mean of its divisors is an integer number (12760327).

Almost surely, 2^25520653 is an apocalyptic number.

It is an amenable number.

25520653 is a deficient number, since it is larger than the sum of its proper divisors (1).

25520653 is an equidigital number, since it uses as much as digits as its factorization.

25520653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 25520653 is about 5051.7970070065. The cubic root of 25520653 is about 294.4177080374.

The spelling of 25520653 in words is "twenty-five million, five hundred twenty thousand, six hundred fifty-three".