25132321 has 2 divisors, whose sum is σ = 25132322. Its totient is φ = 25132320.

The previous prime is 25132319. The next prime is 25132369. The reversal of 25132321 is 12323152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24059025 + 1073296 = 4905^2 + 1036^2 .

It is a cyclic number.

It is not a de Polignac number, because 25132321 - 2¹ = 25132319 is a prime.

Together with 25132319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25132301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12566160 + 12566161.

It is an arithmetic number, because the mean of its divisors is an integer number (12566161).

Almost surely, 2^25132321 is an apocalyptic number.

It is an amenable number.

25132321 is a deficient number, since it is larger than the sum of its proper divisors (1).

25132321 is an equidigital number, since it uses as much as digits as its factorization.

25132321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 19.

The square root of 25132321 is about 5013.2146373360. The cubic root of 25132321 is about 292.9167449354.

Adding to 25132321 its reverse (12323152), we get a palindrome (37455473).

The spelling of 25132321 in words is "twenty-five million, one hundred thirty-two thousand, three hundred twenty-one".