63662725 has 24 divisors (see below), whose sum is σ = 90940608. Its totient is φ = 43305600.

The previous prime is 63662723. The next prime is 63662737. The reversal of 63662725 is 52726636.

It is not a de Polignac number, because 63662725 - 2¹ = 63662723 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63662723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21537 + ... + 24313.

It is an arithmetic number, because the mean of its divisors is an integer number (3789192).

Almost surely, 2^63662725 is an apocalyptic number.

It is an amenable number.

63662725 is a deficient number, since it is larger than the sum of its proper divisors (27277883).

63662725 is a wasteful number, since it uses less digits than its factorization.

63662725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2925 (or 2920 counting only the distinct ones).

The product of its digits is 90720, while the sum is 37.

The square root of 63662725 is about 7978.8924670032. The cubic root of 63662725 is about 399.2961058090.

The spelling of 63662725 in words is "sixty-three million, six hundred sixty-two thousand, seven hundred twenty-five".