25329121 has 2 divisors, whose sum is σ = 25329122. Its totient is φ = 25329120.

The previous prime is 25329119. The next prime is 25329137. The reversal of 25329121 is 12192352.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24453025 + 876096 = 4945^2 + 936^2 .

It is a cyclic number.

It is not a de Polignac number, because 25329121 - 2¹ = 25329119 is a prime.

Together with 25329119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25329721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12664560 + 12664561.

It is an arithmetic number, because the mean of its divisors is an integer number (12664561).

Almost surely, 2^25329121 is an apocalyptic number.

It is an amenable number.

25329121 is a deficient number, since it is larger than the sum of its proper divisors (1).

25329121 is an equidigital number, since it uses as much as digits as its factorization.

25329121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 25.

The square root of 25329121 is about 5032.8044865661. The cubic root of 25329121 is about 293.6793247204.

The spelling of 25329121 in words is "twenty-five million, three hundred twenty-nine thousand, one hundred twenty-one".