265387247 has 4 divisors (see below), whose sum is σ = 268123296. Its totient is φ = 262651200.

The previous prime is 265387237. The next prime is 265387253. The reversal of 265387247 is 742783562.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 742783562 = 2 ⋅371391781.

It is a cyclic number.

It is not a de Polignac number, because 265387247 - 2⁶ = 265387183 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 265387198 and 265387207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265387237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1367879 + ... + 1368072.

It is an arithmetic number, because the mean of its divisors is an integer number (67030824).

Almost surely, 2^265387247 is an apocalyptic number.

265387247 is a deficient number, since it is larger than the sum of its proper divisors (2736049).

265387247 is an equidigital number, since it uses as much as digits as its factorization.

265387247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736048.

The product of its digits is 564480, while the sum is 44.

The square root of 265387247 is about 16290.7104510515. The cubic root of 265387247 is about 642.6285506380.

The spelling of 265387247 in words is "two hundred sixty-five million, three hundred eighty-seven thousand, two hundred forty-seven".