25275239 has 4 divisors (see below), whose sum is σ = 27573000. Its totient is φ = 22977480.

The previous prime is 25275233. The next prime is 25275241. The reversal of 25275239 is 93257252.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25275239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25275199 and 25275208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25275233) 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, 1148864 + ... + 1148885.

It is an arithmetic number, because the mean of its divisors is an integer number (6893250).

Almost surely, 2^25275239 is an apocalyptic number.

25275239 is a deficient number, since it is larger than the sum of its proper divisors (2297761).

25275239 is a wasteful number, since it uses less digits than its factorization.

25275239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297760.

The product of its digits is 37800, while the sum is 35.

The square root of 25275239 is about 5027.4485576682. The cubic root of 25275239 is about 293.4709313413.

The spelling of 25275239 in words is "twenty-five million, two hundred seventy-five thousand, two hundred thirty-nine".