265642435 has 4 divisors (see below), whose sum is σ = 318770928. Its totient is φ = 212513944.

The previous prime is 265642427. The next prime is 265642463. The reversal of 265642435 is 534246562.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 534246562 = 2 ⋅267123281.

It is a cyclic number.

It is not a de Polignac number, because 265642435 - 2³ = 265642427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 265642394 and 265642403.

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, 26564239 + ... + 26564248.

It is an arithmetic number, because the mean of its divisors is an integer number (79692732).

Almost surely, 2^265642435 is an apocalyptic number.

265642435 is a deficient number, since it is larger than the sum of its proper divisors (53128493).

265642435 is an equidigital number, since it uses as much as digits as its factorization.

265642435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53128492.

The product of its digits is 172800, while the sum is 37.

The square root of 265642435 is about 16298.5408856130. The cubic root of 265642435 is about 642.8344617630.

Adding to 265642435 its reverse (534246562), we get a palindrome (799888997).

The spelling of 265642435 in words is "two hundred sixty-five million, six hundred forty-two thousand, four hundred thirty-five".