25135535 has 4 divisors (see below), whose sum is σ = 30162648. Its totient is φ = 20108424.

The previous prime is 25135529. The next prime is 25135541. The reversal of 25135535 is 53553152.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (25135529) and next prime (25135541).

It is a cyclic number.

It is not a de Polignac number, because 25135535 - 2²² = 20941231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25135498 and 25135507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2513549 + ... + 2513558.

It is an arithmetic number, because the mean of its divisors is an integer number (7540662).

Almost surely, 2^25135535 is an apocalyptic number.

25135535 is a deficient number, since it is larger than the sum of its proper divisors (5027113).

25135535 is an equidigital number, since it uses as much as digits as its factorization.

25135535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5027112.

The product of its digits is 11250, while the sum is 29.

The square root of 25135535 is about 5013.5351798905. The cubic root of 25135535 is about 292.9292307737.

Adding to 25135535 its reverse (53553152), we get a palindrome (78688687).

The spelling of 25135535 in words is "twenty-five million, one hundred thirty-five thousand, five hundred thirty-five".