7251278373 has 12 divisors (see below), whose sum is σ = 10503249120. Its totient is φ = 4820717736.

The previous prime is 7251278329. The next prime is 7251278381. The reversal of 7251278373 is 3738721527.

It is a happy number.

7251278373 is a `hidden beast` number, since 7 + 2 + 5 + 1 + 278 + 373 = 666.

It is not a de Polignac number, because 7251278373 - 2⁹ = 7251277861 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7251278303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1118911 + ... + 1125372.

It is an arithmetic number, because the mean of its divisors is an integer number (875270760).

Almost surely, 2^7251278373 is an apocalyptic number.

It is an amenable number.

7251278373 is a deficient number, since it is larger than the sum of its proper divisors (3251970747).

7251278373 is a wasteful number, since it uses less digits than its factorization.

7251278373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244648 (or 2244645 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The square root of 7251278373 is about 85154.4383634817. The cubic root of 7251278373 is about 1935.5520705062.

The spelling of 7251278373 in words is "seven billion, two hundred fifty-one million, two hundred seventy-eight thousand, three hundred seventy-three".