25040865 has 8 divisors (see below), whose sum is σ = 40065408. Its totient is φ = 13355120.

The previous prime is 25040863. The next prime is 25040903. The reversal of 25040865 is 56804052.

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

It is not a de Polignac number, because 25040865 - 2¹ = 25040863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25040863) 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, 834681 + ... + 834710.

It is an arithmetic number, because the mean of its divisors is an integer number (5008176).

Almost surely, 2^25040865 is an apocalyptic number.

It is an amenable number.

25040865 is a deficient number, since it is larger than the sum of its proper divisors (15024543).

25040865 is a wasteful number, since it uses less digits than its factorization.

25040865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669399.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 25040865 is about 5004.0848314152. The cubic root of 25040865 is about 292.5610070717.

The spelling of 25040865 in words is "twenty-five million, forty thousand, eight hundred sixty-five".