25120399 has 2 divisors, whose sum is σ = 25120400. Its totient is φ = 25120398.

The previous prime is 25120369. The next prime is 25120423. The reversal of 25120399 is 99302152.

25120399 is nontrivially palindromic in base 14.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25120399 - 2¹³ = 25112207 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25120399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25120309) 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 as a sum of consecutive naturals, namely, 12560199 + 12560200.

It is an arithmetic number, because the mean of its divisors is an integer number (12560200).

Almost surely, 2^25120399 is an apocalyptic number.

25120399 is a deficient number, since it is larger than the sum of its proper divisors (1).

25120399 is an equidigital number, since it uses as much as digits as its factorization.

25120399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 25120399 is about 5012.0254388820. The cubic root of 25120399 is about 292.8704207118.

The spelling of 25120399 in words is "twenty-five million, one hundred twenty thousand, three hundred ninety-nine".