25123133 has 6 divisors (see below), whose sum is σ = 29224926. Its totient is φ = 21534072.

The previous prime is 25123129. The next prime is 25123159. The reversal of 25123133 is 33132152.

It can be written as a sum of positive squares in only one way, i.e., 24078649 + 1044484 = 4907^2 + 1022^2 .

It is not a de Polignac number, because 25123133 - 2² = 25123129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25123103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 256310 + ... + 256407.

It is an arithmetic number, because the mean of its divisors is an integer number (4870821).

Almost surely, 2^25123133 is an apocalyptic number.

It is an amenable number.

25123133 is a deficient number, since it is larger than the sum of its proper divisors (4101793).

25123133 is an equidigital number, since it uses as much as digits as its factorization.

25123133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512731 (or 512724 counting only the distinct ones).

The product of its digits is 540, while the sum is 20.

The square root of 25123133 is about 5012.2981754880. The cubic root of 25123133 is about 292.8810452602.

Adding to 25123133 its reverse (33132152), we get a palindrome (58255285).

The spelling of 25123133 in words is "twenty-five million, one hundred twenty-three thousand, one hundred thirty-three".