25045709 has 8 divisors (see below), whose sum is σ = 28559160. Its totient is φ = 21758976.

The previous prime is 25045697. The next prime is 25045717. The reversal of 25045709 is 90754052.

It can be written as a sum of positive squares in 4 ways, for example, as 5712100 + 19333609 = 2390^2 + 4397^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 25045709 - 2⁸ = 25045453 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 (25045409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56444 + ... + 56885.

It is an arithmetic number, because the mean of its divisors is an integer number (3569895).

Almost surely, 2^25045709 is an apocalyptic number.

It is an amenable number.

25045709 is a deficient number, since it is larger than the sum of its proper divisors (3513451).

25045709 is a wasteful number, since it uses less digits than its factorization.

25045709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113359.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 25045709 is about 5004.5688125951. The cubic root of 25045709 is about 292.5798705594.

The spelling of 25045709 in words is "twenty-five million, forty-five thousand, seven hundred nine".