265000139 has 4 divisors (see below), whose sum is σ = 265038024. Its totient is φ = 264962256.

The previous prime is 265000117. The next prime is 265000157. The reversal of 265000139 is 931000562.

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-265000139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265000039) 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 3 ways as a sum of consecutive naturals, for example, 5057 + ... + 23570.

It is an arithmetic number, because the mean of its divisors is an integer number (66259506).

Almost surely, 2^265000139 is an apocalyptic number.

265000139 is a deficient number, since it is larger than the sum of its proper divisors (37885).

265000139 is an equidigital number, since it uses as much as digits as its factorization.

265000139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37884.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 265000139 is about 16278.8248654502. The cubic root of 265000139 is about 642.3159411605.

The spelling of 265000139 in words is "two hundred sixty-five million, one hundred thirty-nine", and thus it is an aban number.