63525251 has 4 divisors (see below), whose sum is σ = 63557832. Its totient is φ = 63492672.

The previous prime is 63525229. The next prime is 63525271. The reversal of 63525251 is 15252536.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 63525251 - 2¹⁴ = 63508867 is a prime.

It is a super-2 number, since 2×63525251² = 8070915029226002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63525221) 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, 13166 + ... + 17331.

It is an arithmetic number, because the mean of its divisors is an integer number (15889458).

Almost surely, 2^63525251 is an apocalyptic number.

63525251 is a deficient number, since it is larger than the sum of its proper divisors (32581).

63525251 is a wasteful number, since it uses less digits than its factorization.

63525251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32580.

The product of its digits is 9000, while the sum is 29.

The square root of 63525251 is about 7970.2729564300. The cubic root of 63525251 is about 399.0084838534.

Adding to 63525251 its reverse (15252536), we get a palindrome (78777787).

The spelling of 63525251 in words is "sixty-three million, five hundred twenty-five thousand, two hundred fifty-one".