7645204825 has 6 divisors (see below), whose sum is σ = 9480054014. Its totient is φ = 6116163840.

The previous prime is 7645204817. The next prime is 7645204829. The reversal of 7645204825 is 5284025467.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 5745609 + 7639459216 = 2397^2 + 87404^2 .

It is not a de Polignac number, because 7645204825 - 2³ = 7645204817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7645204829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 152904072 + ... + 152904121.

Almost surely, 2^7645204825 is an apocalyptic number.

It is an amenable number.

7645204825 is a deficient number, since it is larger than the sum of its proper divisors (1834849189).

7645204825 is a wasteful number, since it uses less digits than its factorization.

7645204825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305808203 (or 305808198 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 43.

The square root of 7645204825 is about 87436.8619347698. The cubic root of 7645204825 is about 1969.9855552206.

The spelling of 7645204825 in words is "seven billion, six hundred forty-five million, two hundred four thousand, eight hundred twenty-five".