25803135 has 24 divisors (see below), whose sum is σ = 44972304. Its totient is φ = 13685760.

The previous prime is 25803131. The next prime is 25803137. The reversal of 25803135 is 53130852.

It is not a de Polignac number, because 25803135 - 2² = 25803131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25803099 and 25803108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25803131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7200 + ... + 10170.

It is an arithmetic number, because the mean of its divisors is an integer number (1873846).

Almost surely, 2^25803135 is an apocalyptic number.

25803135 is a deficient number, since it is larger than the sum of its proper divisors (19169169).

25803135 is a wasteful number, since it uses less digits than its factorization.

25803135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3175 (or 3172 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 25803135 is about 5079.6786315672. The cubic root of 25803135 is about 295.5000042945.

Adding to 25803135 its reverse (53130852), we get a palindrome (78933987).

The spelling of 25803135 in words is "twenty-five million, eight hundred three thousand, one hundred thirty-five".