63525457 has 4 divisors (see below), whose sum is σ = 65716020. Its totient is φ = 61334896.

The previous prime is 63525439. The next prime is 63525467. The reversal of 63525457 is 75452536.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29931841 + 33593616 = 5471^2 + 5796^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63525457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63525467) 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, 1095238 + ... + 1095295.

It is an arithmetic number, because the mean of its divisors is an integer number (16429005).

Almost surely, 2^63525457 is an apocalyptic number.

It is an amenable number.

63525457 is a deficient number, since it is larger than the sum of its proper divisors (2190563).

63525457 is a wasteful number, since it uses less digits than its factorization.

63525457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190562.

The product of its digits is 126000, while the sum is 37.

The square root of 63525457 is about 7970.2858794400. The cubic root of 63525457 is about 399.0089151552.

The spelling of 63525457 in words is "sixty-three million, five hundred twenty-five thousand, four hundred fifty-seven".