265378 has 4 divisors (see below), whose sum is σ = 398070. Its totient is φ = 132688.

The previous prime is 265339. The next prime is 265381. The reversal of 265378 is 873562.

265378 is nontrivially palindromic in base 13.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 263169 + 2209 = 513^2 + 47^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

265378 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66343 + ... + 66346.

2²⁶⁵³⁷⁸ is an apocalyptic number.

265378 is a deficient number, since it is larger than the sum of its proper divisors (132692).

265378 is a wasteful number, since it uses less digits than its factorization.

265378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132691.

The product of its digits is 10080, while the sum is 31.

The square root of 265378 is about 515.1485222729. The cubic root of 265378 is about 64.2621086759.

The spelling of 265378 in words is "two hundred sixty-five thousand, three hundred seventy-eight".