25009803 has 84 divisors (see below), whose sum is σ = 48004560. Its totient is φ = 12737088.

The previous prime is 25009793. The next prime is 25009807. The reversal of 25009803 is 30890052.

It is not a de Polignac number, because 25009803 - 2⁸ = 25009547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (25009807) by changing a digit.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 862393 + ... + 862421.

Almost surely, 2^25009803 is an apocalyptic number.

25009803 is a deficient number, since it is larger than the sum of its proper divisors (22994757).

25009803 is an equidigital number, since it uses as much as digits as its factorization.

25009803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 52 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 25009803 is about 5000.9802039200. The cubic root of 25009803 is about 292.4399876881.

Adding to 25009803 its reverse (30890052), we get a palindrome (55899855).

The spelling of 25009803 in words is "twenty-five million, nine thousand, eight hundred three".