25533653 has 2 divisors, whose sum is σ = 25533654. Its totient is φ = 25533652.

The previous prime is 25533619. The next prime is 25533661. The reversal of 25533653 is 35633552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18037009 + 7496644 = 4247^2 + 2738^2 .

It is a cyclic number.

It is not a de Polignac number, because 25533653 - 2¹⁰ = 25532629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25539653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12766826 + 12766827.

It is an arithmetic number, because the mean of its divisors is an integer number (12766827).

Almost surely, 2^25533653 is an apocalyptic number.

It is an amenable number.

25533653 is a deficient number, since it is larger than the sum of its proper divisors (1).

25533653 is an equidigital number, since it uses as much as digits as its factorization.

25533653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40500, while the sum is 32.

The square root of 25533653 is about 5053.0835140536. The cubic root of 25533653 is about 294.4676908298.

The spelling of 25533653 in words is "twenty-five million, five hundred thirty-three thousand, six hundred fifty-three".