25082139 has 8 divisors (see below), whose sum is σ = 34009920. Its totient is φ = 16437896.

The previous prime is 25082117. The next prime is 25082153. The reversal of 25082139 is 93128052.

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 25082139 - 2⁵ = 25082107 is a prime.

It is a super-2 number, since 2×25082139² = 1258227393630642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25082039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70677 + ... + 71030.

It is an arithmetic number, because the mean of its divisors is an integer number (4251240).

Almost surely, 2^25082139 is an apocalyptic number.

25082139 is a deficient number, since it is larger than the sum of its proper divisors (8927781).

25082139 is a wasteful number, since it uses less digits than its factorization.

25082139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141769.

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

The square root of 25082139 is about 5008.2071642455. The cubic root of 25082139 is about 292.7216582675.

The spelling of 25082139 in words is "twenty-five million, eighty-two thousand, one hundred thirty-nine".