25403535 has 12 divisors (see below), whose sum is σ = 44032872. Its totient is φ = 13548528.

The previous prime is 25403533. The next prime is 25403563. The reversal of 25403535 is 53530452.

It is not a de Polignac number, because 25403535 - 2¹ = 25403533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25403499 and 25403508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25403533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 282217 + ... + 282306.

It is an arithmetic number, because the mean of its divisors is an integer number (3669406).

Almost surely, 2^25403535 is an apocalyptic number.

25403535 is a deficient number, since it is larger than the sum of its proper divisors (18629337).

25403535 is a wasteful number, since it uses less digits than its factorization.

25403535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564534 (or 564531 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 25403535 is about 5040.1919606301. The cubic root of 25403535 is about 293.9666420573.

Adding to 25403535 its reverse (53530452), we get a palindrome (78933987).

The spelling of 25403535 in words is "twenty-five million, four hundred three thousand, five hundred thirty-five".