63662437725 has 48 divisors (see below), whose sum is σ = 112800077952. Its totient is φ = 31599279360.

The previous prime is 63662437693. The next prime is 63662437733. The reversal of 63662437725 is 52773426636.

It is not a de Polignac number, because 63662437725 - 2⁵ = 63662437693 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 434902 + ... + 562551.

It is an arithmetic number, because the mean of its divisors is an integer number (2350001624).

Almost surely, 2^63662437725 is an apocalyptic number.

It is an amenable number.

63662437725 is a deficient number, since it is larger than the sum of its proper divisors (49137640227).

63662437725 is a wasteful number, since it uses less digits than its factorization.

63662437725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997526 (or 997521 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 51.

The spelling of 63662437725 in words is "sixty-three billion, six hundred sixty-two million, four hundred thirty-seven thousand, seven hundred twenty-five".