63425623 has 4 divisors (see below), whose sum is σ = 67156560. Its totient is φ = 59694688.

The previous prime is 63425611. The next prime is 63425633. The reversal of 63425623 is 32652436.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63425623 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 (63425633) 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, 1865443 + ... + 1865476.

It is an arithmetic number, because the mean of its divisors is an integer number (16789140).

Almost surely, 2^63425623 is an apocalyptic number.

63425623 is a deficient number, since it is larger than the sum of its proper divisors (3730937).

63425623 is a wasteful number, since it uses less digits than its factorization.

63425623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3730936.

The product of its digits is 25920, while the sum is 31.

The square root of 63425623 is about 7964.0205298580. The cubic root of 63425623 is about 398.7997835532.

The spelling of 63425623 in words is "sixty-three million, four hundred twenty-five thousand, six hundred twenty-three".