10001265 has 8 divisors (see below), whose sum is σ = 16002048. Its totient is φ = 5334000.

The previous prime is 10001261. The next prime is 10001269. The reversal of 10001265 is 56210001.

10001265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (10001261) and next prime (10001269).

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

It is not a de Polignac number, because 10001265 - 2² = 10001261 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 666751 = 10001265 / (1 + 0 + 0 + 0 + 1 + 2 + 6 + 5).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10001261) 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, 333361 + ... + 333390.

It is an arithmetic number, because the mean of its divisors is an integer number (2000256).

Almost surely, 2^10001265 is an apocalyptic number.

10001265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10001265 is a deficient number, since it is larger than the sum of its proper divisors (6000783).

10001265 is an equidigital number, since it uses as much as digits as its factorization.

10001265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666759.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 10001265 is about 3162.4776679053. The cubic root of 10001265 is about 215.4525531531.

Adding to 10001265 its reverse (56210001), we get a palindrome (66211266).

The spelling of 10001265 in words is "ten million, one thousand, two hundred sixty-five".