64145525 has 12 divisors (see below), whose sum is σ = 81481764. Its totient is φ = 50064000.

The previous prime is 64145513. The next prime is 64145527. The reversal of 64145525 is 52554146.

It can be written as a sum of positive squares in 6 ways, for example, as 289444 + 63856081 = 538^2 + 7991^2 .

It is not a de Polignac number, because 64145525 - 2⁴ = 64145509 is a prime.

It is a super-2 number, since 2×64145525² = 8229296755051250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64145491 and 64145500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64145527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30266 + ... + 32315.

It is an arithmetic number, because the mean of its divisors is an integer number (6790147).

Almost surely, 2^64145525 is an apocalyptic number.

It is an amenable number.

64145525 is a deficient number, since it is larger than the sum of its proper divisors (17336239).

64145525 is a wasteful number, since it uses less digits than its factorization.

64145525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62632 (or 62627 counting only the distinct ones).

The product of its digits is 24000, while the sum is 32.

The square root of 64145525 is about 8009.0901480755. The cubic root of 64145525 is about 400.3029475823.

The spelling of 64145525 in words is "sixty-four million, one hundred forty-five thousand, five hundred twenty-five".