25485909 has 8 divisors (see below), whose sum is σ = 35458752. Its totient is φ = 16251840.

The previous prime is 25485899. The next prime is 25485923. The reversal of 25485909 is 90958452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25485909 - 2⁷ = 25485781 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25485949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184612 + ... + 184749.

It is an arithmetic number, because the mean of its divisors is an integer number (4432344).

Almost surely, 2^25485909 is an apocalyptic number.

It is an amenable number.

25485909 is a deficient number, since it is larger than the sum of its proper divisors (9972843).

25485909 is a wasteful number, since it uses less digits than its factorization.

25485909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369387.

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 25485909 is about 5048.3570594798. The cubic root of 25485909 is about 294.2840399004.

The spelling of 25485909 in words is "twenty-five million, four hundred eighty-five thousand, nine hundred nine".