7643372562225 has 63 divisors (see below), whose sum is σ = 14210866353243. Its totient is φ = 4076266310640.

The previous prime is 7643372562211. The next prime is 7643372562239. The reversal of 7643372562225 is 5222652733467.

The square root of 7643372562225 is 2764665.

It is a perfect power (a square), and thus also a powerful number.

7643372562225 is a `hidden beast` number, since 7 + 6 + 4 + 3 + 3 + 7 + 2 + 5 + 622 + 2 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (7643372562211) and next prime (7643372562239).

It can be written as a sum of positive squares in only one way, i.e., 2751614122401 + 4891758439824 = 1658799^2 + 2211732^2 .

It is not a de Polignac number, because 7643372562225 - 2⁵ = 7643372562193 is a prime.

It is a super-2 number, since 2×7643372562225² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 373219536 + ... + 373240014.

Almost surely, 2^{7643372562225} is an apocalyptic number.

7643372562225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

7643372562225 is the 2764665-th square number.

7643372562225 is the 1382333-rd centered octagonal number.

It is an amenable number.

7643372562225 is a deficient number, since it is larger than the sum of its proper divisors (6567493791018).

7643372562225 is an frugal number, since it uses more digits than its factorization.

7643372562225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40986 (or 20487 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 54.

The spelling of 7643372562225 in words is "seven trillion, six hundred forty-three billion, three hundred seventy-two million, five hundred sixty-two thousand, two hundred twenty-five".