1265240365 has 8 divisors (see below), whose sum is σ = 1518616800. Its totient is φ = 1011973392.

The previous prime is 1265240341. The next prime is 1265240369. The reversal of 1265240365 is 5630425621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1265240365 - 2⁷ = 1265240237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1265240365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265240369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682 + ... + 50308.

It is an arithmetic number, because the mean of its divisors is an integer number (189827100).

Almost surely, 2^1265240365 is an apocalyptic number.

It is an amenable number.

1265240365 is a deficient number, since it is larger than the sum of its proper divisors (253376435).

1265240365 is an equidigital number, since it uses as much as digits as its factorization.

1265240365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54731.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 1265240365 is about 35570.2173875842. The cubic root of 1265240365 is about 1081.5775884229.

Adding to 1265240365 its reverse (5630425621), we get a palindrome (6895665986).

The spelling of 1265240365 in words is "one billion, two hundred sixty-five million, two hundred forty thousand, three hundred sixty-five".