25537133 has 2 divisors, whose sum is σ = 25537134. Its totient is φ = 25537132.

The previous prime is 25537129. The next prime is 25537151. The reversal of 25537133 is 33173552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24730729 + 806404 = 4973^2 + 898^2 .

It is a cyclic number.

It is not a de Polignac number, because 25537133 - 2² = 25537129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25537096 and 25537105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25537103) 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, 12768566 + 12768567.

It is an arithmetic number, because the mean of its divisors is an integer number (12768567).

Almost surely, 2^25537133 is an apocalyptic number.

It is an amenable number.

25537133 is a deficient number, since it is larger than the sum of its proper divisors (1).

25537133 is an equidigital number, since it uses as much as digits as its factorization.

25537133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9450, while the sum is 29.

The square root of 25537133 is about 5053.4278465216. The cubic root of 25537133 is about 294.4810679601.

The spelling of 25537133 in words is "twenty-five million, five hundred thirty-seven thousand, one hundred thirty-three".