25045909 has 12 divisors (see below), whose sum is σ = 29815104. Its totient is φ = 20966904.

The previous prime is 25045903. The next prime is 25045921. The reversal of 25045909 is 90954052.

It is not a de Polignac number, because 25045909 - 2³ = 25045901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25045901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3837 + ... + 8050.

It is an arithmetic number, because the mean of its divisors is an integer number (2484592).

Almost surely, 2^25045909 is an apocalyptic number.

It is an amenable number.

25045909 is a deficient number, since it is larger than the sum of its proper divisors (4769195).

25045909 is a wasteful number, since it uses less digits than its factorization.

25045909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11944 (or 11937 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 25045909 is about 5004.5887942967. The cubic root of 25045909 is about 292.5806493464.

The spelling of 25045909 in words is "twenty-five million, forty-five thousand, nine hundred nine".