25560403 has 12 divisors (see below), whose sum is σ = 28564144. Its totient is φ = 22849200.

The previous prime is 25560389. The next prime is 25560463. The reversal of 25560403 is 30406552.

It is a de Polignac number, because none of the positive numbers 2^k-25560403 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25560463) 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, 5650 + ... + 9112.

Almost surely, 2^25560403 is an apocalyptic number.

25560403 is a deficient number, since it is larger than the sum of its proper divisors (3003741).

25560403 is a wasteful number, since it uses less digits than its factorization.

25560403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3546 (or 3535 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 25560403 is about 5055.7297198327. The cubic root of 25560403 is about 294.5704866914.

Adding to 25560403 its reverse (30406552), we get a palindrome (55966955).

The spelling of 25560403 in words is "twenty-five million, five hundred sixty thousand, four hundred three".