25535039 has 4 divisors (see below), whose sum is σ = 25783056. Its totient is φ = 25287024.

The previous prime is 25535021. The next prime is 25535047. The reversal of 25535039 is 93053552.

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

It is a cyclic number.

It is not a de Polignac number, because 25535039 - 2¹⁶ = 25469503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25534996 and 25535014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25535099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123854 + ... + 124059.

It is an arithmetic number, because the mean of its divisors is an integer number (6445764).

Almost surely, 2^25535039 is an apocalyptic number.

25535039 is a deficient number, since it is larger than the sum of its proper divisors (248017).

25535039 is a wasteful number, since it uses less digits than its factorization.

25535039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248016.

The product of its (nonzero) digits is 20250, while the sum is 32.

The square root of 25535039 is about 5053.2206561756. The cubic root of 25535039 is about 294.4730187635.

The spelling of 25535039 in words is "twenty-five million, five hundred thirty-five thousand, thirty-nine".