25479329 has 2 divisors, whose sum is σ = 25479330. Its totient is φ = 25479328.

The previous prime is 25479299. The next prime is 25479343. The reversal of 25479329 is 92397452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21669025 + 3810304 = 4655^2 + 1952^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25479329 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25479359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12739664 + 12739665.

It is an arithmetic number, because the mean of its divisors is an integer number (12739665).

Almost surely, 2^25479329 is an apocalyptic number.

It is an amenable number.

25479329 is a deficient number, since it is larger than the sum of its proper divisors (1).

25479329 is an equidigital number, since it uses as much as digits as its factorization.

25479329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 41.

The square root of 25479329 is about 5047.7053202421. The cubic root of 25479329 is about 294.2587114512.

The spelling of 25479329 in words is "twenty-five million, four hundred seventy-nine thousand, three hundred twenty-nine".