7249450865 has 4 divisors (see below), whose sum is σ = 8699341044. Its totient is φ = 5799560688.

The previous prime is 7249450849. The next prime is 7249450919. The reversal of 7249450865 is 5680549427.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3520760896 + 3728689969 = 59336^2 + 61063^2 .

It is a cyclic number.

It is not a de Polignac number, because 7249450865 - 2⁴ = 7249450849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 724945082 + ... + 724945091.

It is an arithmetic number, because the mean of its divisors is an integer number (2174835261).

Almost surely, 2^7249450865 is an apocalyptic number.

It is an amenable number.

7249450865 is a deficient number, since it is larger than the sum of its proper divisors (1449890179).

7249450865 is a wasteful number, since it uses less digits than its factorization.

7249450865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449890178.

The product of its (nonzero) digits is 2419200, while the sum is 50.

The square root of 7249450865 is about 85143.7071368166. The cubic root of 7249450865 is about 1935.3894539343.

The spelling of 7249450865 in words is "seven billion, two hundred forty-nine million, four hundred fifty thousand, eight hundred sixty-five".