3665064725 has 24 divisors (see below), whose sum is σ = 5218588608. Its totient is φ = 2501251200.

The previous prime is 3665064673. The next prime is 3665064727. The reversal of 3665064725 is 5274605663.

It is a happy number.

It is not a de Polignac number, because 3665064725 - 2¹⁶ = 3664999189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3665064727) 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 23 ways as a sum of consecutive naturals, for example, 12704 + ... + 86553.

It is an arithmetic number, because the mean of its divisors is an integer number (217441192).

Almost surely, 2^3665064725 is an apocalyptic number.

3665064725 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3665064725 is a deficient number, since it is larger than the sum of its proper divisors (1553523883).

3665064725 is a wasteful number, since it uses less digits than its factorization.

3665064725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99485 (or 99480 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 44.

The square root of 3665064725 is about 60539.7780389060. The cubic root of 3665064725 is about 1541.7970707646.

The spelling of 3665064725 in words is "three billion, six hundred sixty-five million, sixty-four thousand, seven hundred twenty-five".