7253385665 has 16 divisors (see below), whose sum is σ = 9219640320. Its totient is φ = 5459255040.

The previous prime is 7253385583. The next prime is 7253385683. The reversal of 7253385665 is 5665833527.

It is not a de Polignac number, because 7253385665 - 2²⁸ = 6984950209 is a prime.

It is a super-2 number, since 2×7253385665² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224480 + ... + 254750.

It is an arithmetic number, because the mean of its divisors is an integer number (576227520).

Almost surely, 2^7253385665 is an apocalyptic number.

It is an amenable number.

7253385665 is a deficient number, since it is larger than the sum of its proper divisors (1966254655).

7253385665 is a wasteful number, since it uses less digits than its factorization.

7253385665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33112.

The product of its digits is 4536000, while the sum is 50.

The square root of 7253385665 is about 85166.8108185342. The cubic root of 7253385665 is about 1935.7395490967.

The spelling of 7253385665 in words is "seven billion, two hundred fifty-three million, three hundred eighty-five thousand, six hundred sixty-five".