630825009 has 4 divisors (see below), whose sum is σ = 841100016. Its totient is φ = 420550004.

The previous prime is 630824959. The next prime is 630825011. The reversal of 630825009 is 900528036.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 630825009 - 2¹² = 630820913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (630825029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105137499 + ... + 105137504.

It is an arithmetic number, because the mean of its divisors is an integer number (210275004).

Almost surely, 2^630825009 is an apocalyptic number.

It is an amenable number.

630825009 is a deficient number, since it is larger than the sum of its proper divisors (210275007).

630825009 is a wasteful number, since it uses less digits than its factorization.

630825009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210275006.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 630825009 is about 25116.2299917802. The cubic root of 630825009 is about 857.6359307046.

The spelling of 630825009 in words is "six hundred thirty million, eight hundred twenty-five thousand, nine".