7646628025 has 9 divisors (see below), whose sum is σ = 9482360941. Its totient is φ = 6116952640.

The previous prime is 7646628023. The next prime is 7646628029. The reversal of 7646628025 is 5208266467.

The square root of 7646628025 is 87445.

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

7646628025 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4656288169 + 2990339856 = 68237^2 + 54684^2 .

It is not a de Polignac number, because 7646628025 - 2¹ = 7646628023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7646628023) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 428481 + ... + 445969.

Almost surely, 2^7646628025 is an apocalyptic number.

7646628025 is the 87445-th square number.

7646628025 is the 43723-rd centered octagonal number.

It is an amenable number.

7646628025 is a deficient number, since it is larger than the sum of its proper divisors (1835732916).

7646628025 is an frugal number, since it uses more digits than its factorization.

7646628025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34988 (or 17494 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 46.

The cubic root of 7646628025 is about 1970.1077891154.

The spelling of 7646628025 in words is "seven billion, six hundred forty-six million, six hundred twenty-eight thousand, twenty-five".