25131133 has 2 divisors, whose sum is σ = 25131134. Its totient is φ = 25131132.

The previous prime is 25131131. The next prime is 25131187. The reversal of 25131133 is 33113152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25030009 + 101124 = 5003^2 + 318^2 .

It is a cyclic number.

It is not a de Polignac number, because 25131133 - 2¹ = 25131131 is a prime.

Together with 25131131, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 25131133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25131131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12565566 + 12565567.

It is an arithmetic number, because the mean of its divisors is an integer number (12565567).

Almost surely, 2^25131133 is an apocalyptic number.

It is an amenable number.

25131133 is a deficient number, since it is larger than the sum of its proper divisors (1).

25131133 is an equidigital number, since it uses as much as digits as its factorization.

25131133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270, while the sum is 19.

The square root of 25131133 is about 5013.0961490879. The cubic root of 25131133 is about 292.9121294898.

Adding to 25131133 its reverse (33113152), we get a palindrome (58244285).

The spelling of 25131133 in words is "twenty-five million, one hundred thirty-one thousand, one hundred thirty-three".