25306133 has 2 divisors, whose sum is σ = 25306134. Its totient is φ = 25306132.

The previous prime is 25306109. The next prime is 25306139. The reversal of 25306133 is 33160352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24820324 + 485809 = 4982^2 + 697^2 .

It is a cyclic number.

It is not a de Polignac number, because 25306133 - 2¹⁰ = 25305109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25306099 and 25306108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25306139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12653066 + 12653067.

It is an arithmetic number, because the mean of its divisors is an integer number (12653067).

Almost surely, 2^25306133 is an apocalyptic number.

It is an amenable number.

25306133 is a deficient number, since it is larger than the sum of its proper divisors (1).

25306133 is an equidigital number, since it uses as much as digits as its factorization.

25306133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 25306133 is about 5030.5201520320. The cubic root of 25306133 is about 293.5904527889.

Adding to 25306133 its reverse (33160352), we get a palindrome (58466485).

The spelling of 25306133 in words is "twenty-five million, three hundred six thousand, one hundred thirty-three".