265125138 has 16 divisors (see below), whose sum is σ = 530561856. Its totient is φ = 88323120.

The previous prime is 265125137. The next prime is 265125151. The reversal of 265125138 is 831521562.

It is a junction number, because it is equal to n+sod(n) for n = 265125099 and 265125108.

It is not an unprimeable number, because it can be changed into a prime (265125131) 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, 1081 + ... + 23052.

It is an arithmetic number, because the mean of its divisors is an integer number (33160116).

Almost surely, 2^265125138 is an apocalyptic number.

265125138 is an abundant number, since it is smaller than the sum of its proper divisors (265436718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265125138 is a wasteful number, since it uses less digits than its factorization.

265125138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25969.

The product of its digits is 14400, while the sum is 33.

The square root of 265125138 is about 16282.6637255702. The cubic root of 265125138 is about 642.4169174971.

The spelling of 265125138 in words is "two hundred sixty-five million, one hundred twenty-five thousand, one hundred thirty-eight".