25611653 has 2 divisors, whose sum is σ = 25611654. Its totient is φ = 25611652.

The previous prime is 25611647. The next prime is 25611689. The reversal of 25611653 is 35611652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22591009 + 3020644 = 4753^2 + 1738^2 .

It is a cyclic number.

It is not a de Polignac number, because 25611653 - 2⁴ = 25611637 is a prime.

It is a Chen prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25611613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12805826 + 12805827.

It is an arithmetic number, because the mean of its divisors is an integer number (12805827).

Almost surely, 2^25611653 is an apocalyptic number.

It is an amenable number.

25611653 is a deficient number, since it is larger than the sum of its proper divisors (1).

25611653 is an equidigital number, since it uses as much as digits as its factorization.

25611653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 29.

The square root of 25611653 is about 5060.7956884269. The cubic root of 25611653 is about 294.7672318775.

Subtracting 25611653 from its reverse (35611652), we obtain a palindrome (9999999).

The spelling of 25611653 in words is "twenty-five million, six hundred eleven thousand, six hundred fifty-three".