25006239 has 20 divisors (see below), whose sum is σ = 37640680. Its totient is φ = 16543440.

The previous prime is 25006231. The next prime is 25006273. The reversal of 25006239 is 93260052.

It is not a de Polignac number, because 25006239 - 2³ = 25006231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25006231) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10149 + ... + 12369.

It is an arithmetic number, because the mean of its divisors is an integer number (1882034).

Almost surely, 2^25006239 is an apocalyptic number.

25006239 is a deficient number, since it is larger than the sum of its proper divisors (12634441).

25006239 is a wasteful number, since it uses less digits than its factorization.

25006239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372 (or 2363 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 25006239 is about 5000.6238610797. The cubic root of 25006239 is about 292.4260957270.

The spelling of 25006239 in words is "twenty-five million, six thousand, two hundred thirty-nine".