25803237 has 16 divisors (see below), whose sum is σ = 35484480. Its totient is φ = 16670592.

The previous prime is 25803233. The next prime is 25803247. The reversal of 25803237 is 73230852.

It is not a de Polignac number, because 25803237 - 2² = 25803233 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25803233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11923 + ... + 13919.

It is an arithmetic number, because the mean of its divisors is an integer number (2217780).

Almost surely, 2^25803237 is an apocalyptic number.

It is an amenable number.

25803237 is a deficient number, since it is larger than the sum of its proper divisors (9681243).

25803237 is a wasteful number, since it uses less digits than its factorization.

25803237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2132.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 25803237 is about 5079.6886715625. The cubic root of 25803237 is about 295.5003936653.

The spelling of 25803237 in words is "twenty-five million, eight hundred three thousand, two hundred thirty-seven".