63520425 has 18 divisors (see below), whose sum is σ = 113772542. Its totient is φ = 33877440.

The previous prime is 63520423. The next prime is 63520451. The reversal of 63520425 is 52402536.

63520425 is a `hidden beast` number, since 635 + 2 + 0 + 4 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 746496 + 62773929 = 864^2 + 7923^2 .

It is not a de Polignac number, because 63520425 - 2¹ = 63520423 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63520421) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 140932 + ... + 141381.

Almost surely, 2^63520425 is an apocalyptic number.

It is an amenable number.

63520425 is a deficient number, since it is larger than the sum of its proper divisors (50252117).

63520425 is a wasteful number, since it uses less digits than its factorization.

63520425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282329 (or 282321 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 63520425 is about 7969.9702006971. The cubic root of 63520425 is about 398.9983794006.

The spelling of 63520425 in words is "sixty-three million, five hundred twenty thousand, four hundred twenty-five".