265145645 has 4 divisors (see below), whose sum is σ = 318174780. Its totient is φ = 212116512.

The previous prime is 265145609. The next prime is 265145677. The reversal of 265145645 is 546541562.

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

It can be written as a sum of positive squares in 2 ways, for example, as 55562116 + 209583529 = 7454^2 + 14477^2 .

It is a cyclic number.

It is not a de Polignac number, because 265145645 - 2¹² = 265141549 is a prime.

It is a super-3 number, since 3×265145645³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 265145599 and 265145608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26514560 + ... + 26514569.

It is an arithmetic number, because the mean of its divisors is an integer number (79543695).

Almost surely, 2^265145645 is an apocalyptic number.

It is an amenable number.

265145645 is a deficient number, since it is larger than the sum of its proper divisors (53029135).

265145645 is an equidigital number, since it uses as much as digits as its factorization.

265145645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53029134.

The product of its digits is 144000, while the sum is 38.

The square root of 265145645 is about 16283.2934322268. The cubic root of 265145645 is about 642.4334803728.

The spelling of 265145645 in words is "two hundred sixty-five million, one hundred forty-five thousand, six hundred forty-five".