7639634025 has 27 divisors (see below), whose sum is σ = 13685782071. Its totient is φ = 4073772240.

The previous prime is 7639633999. The next prime is 7639634047. The reversal of 7639634025 is 5204369367.

The square root of 7639634025 is 87405.

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

7639634025 is a `hidden beast` number, since 7 + 6 + 3 + 9 + 634 + 0 + 2 + 5 = 666.

7639634025 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 only one way, i.e., 2750268249 + 4889365776 = 52443^2 + 69924^2 .

It is not a de Polignac number, because 7639634025 - 2⁵ = 7639633993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 26 ways as a sum of consecutive naturals, for example, 1308162 + ... + 1313988.

Almost surely, 2^7639634025 is an apocalyptic number.

7639634025 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

7639634025 is the 87405-th square number.

7639634025 is the 43703-rd centered octagonal number.

It is an amenable number.

7639634025 is a deficient number, since it is larger than the sum of its proper divisors (6046148046).

7639634025 is an frugal number, since it uses more digits than its factorization.

7639634025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11670 (or 5835 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 45.

The cubic root of 7639634025 is about 1969.5069518599.

The spelling of 7639634025 in words is "seven billion, six hundred thirty-nine million, six hundred thirty-four thousand, twenty-five".