63670225 has 24 divisors (see below), whose sum is σ = 83264760. Its totient is φ = 48222720.

The previous prime is 63670183. The next prime is 63670241. The reversal of 63670225 is 52207636.

It can be written as a sum of positive squares in 12 ways, for example, as 14684224 + 48986001 = 3832^2 + 6999^2 .

It is not a de Polignac number, because 63670225 - 2¹³ = 63662033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37597 + ... + 39253.

It is an arithmetic number, because the mean of its divisors is an integer number (3469365).

Almost surely, 2^63670225 is an apocalyptic number.

It is an amenable number.

63670225 is a deficient number, since it is larger than the sum of its proper divisors (19594535).

63670225 is a wasteful number, since it uses less digits than its factorization.

63670225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749 (or 1744 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 63670225 is about 7979.3624432031. The cubic root of 63670225 is about 399.3117853305.

The spelling of 63670225 in words is "sixty-three million, six hundred seventy thousand, two hundred twenty-five".