13250765 has 16 divisors (see below), whose sum is σ = 17547840. Its totient is φ = 9525120.

The previous prime is 13250761. The next prime is 13250779. The reversal of 13250765 is 56705231.

13250765 = 341² + 342² + ... + 429².

It is not a de Polignac number, because 13250765 - 2² = 13250761 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13250761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3542 + ... + 6248.

It is an arithmetic number, because the mean of its divisors is an integer number (1096740).

Almost surely, 2^13250765 is an apocalyptic number.

It is an amenable number.

13250765 is a deficient number, since it is larger than the sum of its proper divisors (4297075).

13250765 is a wasteful number, since it uses less digits than its factorization.

13250765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2812.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 13250765 is about 3640.1600239550. The cubic root of 13250765 is about 236.6357285045.

Adding to 13250765 its reverse (56705231), we get a palindrome (69955996).

The spelling of 13250765 in words is "thirteen million, two hundred fifty thousand, seven hundred sixty-five".