7228578725 has 6 divisors (see below), whose sum is σ = 8963437650. Its totient is φ = 5782862960.

The previous prime is 7228578691. The next prime is 7228578739. The reversal of 7228578725 is 5278758227.

It can be written as a sum of positive squares in 3 ways, for example, as 1806760036 + 5421818689 = 42506^2 + 73633^2 .

It is not a de Polignac number, because 7228578725 - 2²⁸ = 6960143269 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 144571550 + ... + 144571599.

It is an arithmetic number, because the mean of its divisors is an integer number (1493906275).

Almost surely, 2^7228578725 is an apocalyptic number.

It is an amenable number.

7228578725 is a deficient number, since it is larger than the sum of its proper divisors (1734858925).

7228578725 is a wasteful number, since it uses less digits than its factorization.

7228578725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289143159 (or 289143154 counting only the distinct ones).

The product of its digits is 4390400, while the sum is 53.

The square root of 7228578725 is about 85021.0487173617. The cubic root of 7228578725 is about 1933.5302533434.

The spelling of 7228578725 in words is "seven billion, two hundred twenty-eight million, five hundred seventy-eight thousand, seven hundred twenty-five".