25050409 has 2 divisors, whose sum is σ = 25050410. Its totient is φ = 25050408.

The previous prime is 25050407. The next prime is 25050413. The reversal of 25050409 is 90405052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24472809 + 577600 = 4947^2 + 760^2 .

It is a cyclic number.

It is not a de Polignac number, because 25050409 - 2¹ = 25050407 is a prime.

Together with 25050407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25050407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12525204 + 12525205.

It is an arithmetic number, because the mean of its divisors is an integer number (12525205).

Almost surely, 2^25050409 is an apocalyptic number.

It is an amenable number.

25050409 is a deficient number, since it is larger than the sum of its proper divisors (1).

25050409 is an equidigital number, since it uses as much as digits as its factorization.

25050409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 25050409 is about 5005.0383614913. The cubic root of 25050409 is about 292.5981709582.

The spelling of 25050409 in words is "twenty-five million, fifty thousand, four hundred nine".