63825081 has 4 divisors (see below), whose sum is σ = 85100112. Its totient is φ = 42550052.

The previous prime is 63825067. The next prime is 63825109. The reversal of 63825081 is 18052836.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63825081 - 2⁵ = 63825049 is a prime.

It is a super-2 number, since 2×63825081² = 8147281929313122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63824081) 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, 10637511 + ... + 10637516.

It is an arithmetic number, because the mean of its divisors is an integer number (21275028).

Almost surely, 2^63825081 is an apocalyptic number.

It is an amenable number.

63825081 is a deficient number, since it is larger than the sum of its proper divisors (21275031).

63825081 is a wasteful number, since it uses less digits than its factorization.

63825081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21275030.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 63825081 is about 7989.0600823877. The cubic root of 63825081 is about 399.6352529167.

The spelling of 63825081 in words is "sixty-three million, eight hundred twenty-five thousand, eighty-one".