642033625 has 8 divisors (see below), whose sum is σ = 801258120. Its totient is φ = 513626800.

The previous prime is 642033619. The next prime is 642033643. The reversal of 642033625 is 526330246.

It is a happy number.

642033625 is digitally balanced in base 2, 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 64256256 + 577777369 = 8016^2 + 24037^2 .

It is not a de Polignac number, because 642033625 - 2¹⁵ = 642000857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2568010 + ... + 2568259.

It is an arithmetic number, because the mean of its divisors is an integer number (100157265).

Almost surely, 2^642033625 is an apocalyptic number.

It is an amenable number.

642033625 is a deficient number, since it is larger than the sum of its proper divisors (159224495).

642033625 is an equidigital number, since it uses as much as digits as its factorization.

642033625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5136284 (or 5136274 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 642033625 is about 25338.3824463994. The cubic root of 642033625 is about 862.6856843095.

The spelling of 642033625 in words is "six hundred forty-two million, thirty-three thousand, six hundred twenty-five".