25081239 has 8 divisors (see below), whose sum is σ = 35408880. Its totient is φ = 15737216.

The previous prime is 25081213. The next prime is 25081241. The reversal of 25081239 is 93218052.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25081239 - 2⁵ = 25081207 is a prime.

It is a super-3 number, since 3×25081239³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25081279) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 245844 + ... + 245945.

It is an arithmetic number, because the mean of its divisors is an integer number (4426110).

Almost surely, 2^25081239 is an apocalyptic number.

25081239 is a deficient number, since it is larger than the sum of its proper divisors (10327641).

25081239 is a wasteful number, since it uses less digits than its factorization.

25081239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491809.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 25081239 is about 5008.1173109263. The cubic root of 25081239 is about 292.7181570690.

The spelling of 25081239 in words is "twenty-five million, eighty-one thousand, two hundred thirty-nine".