25133321 has 2 divisors, whose sum is σ = 25133322. Its totient is φ = 25133320.

The previous prime is 25133309. The next prime is 25133363. The reversal of 25133321 is 12333152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24393721 + 739600 = 4939^2 + 860^2 .

It is a cyclic number.

It is not a de Polignac number, because 25133321 - 2¹⁰ = 25132297 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25133293 and 25133302.

It is not a weakly prime, because it can be changed into another prime (25133221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12566660 + 12566661.

It is an arithmetic number, because the mean of its divisors is an integer number (12566661).

Almost surely, 2^25133321 is an apocalyptic number.

It is an amenable number.

25133321 is a deficient number, since it is larger than the sum of its proper divisors (1).

25133321 is an equidigital number, since it uses as much as digits as its factorization.

25133321 is an evil number, because the sum of its binary digits is even.

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

The square root of 25133321 is about 5013.3143727478. The cubic root of 25133321 is about 292.9206298778.

Adding to 25133321 its reverse (12333152), we get a palindrome (37466473).

The spelling of 25133321 in words is "twenty-five million, one hundred thirty-three thousand, three hundred twenty-one".