25494665 has 16 divisors (see below), whose sum is σ = 35910912. Its totient is φ = 17008704.

The previous prime is 25494653. The next prime is 25494691. The reversal of 25494665 is 56649452.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 25494665 - 2¹⁰ = 25493641 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8549 + ... + 11138.

It is an arithmetic number, because the mean of its divisors is an integer number (2244432).

Almost surely, 2^25494665 is an apocalyptic number.

It is an amenable number.

25494665 is a deficient number, since it is larger than the sum of its proper divisors (10416247).

25494665 is a wasteful number, since it uses less digits than its factorization.

25494665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19736.

The product of its digits is 259200, while the sum is 41.

The square root of 25494665 is about 5049.2241978348. The cubic root of 25494665 is about 294.3177376851.

The spelling of 25494665 in words is "twenty-five million, four hundred ninety-four thousand, six hundred sixty-five".