64125711 has 12 divisors (see below), whose sum is σ = 99751288. Its totient is φ = 39461904.

The previous prime is 64125697. The next prime is 64125749. The reversal of 64125711 is 11752146.

It is a happy number.

64125711 is a `hidden beast` number, since 641 + 2 + 5 + 7 + 11 = 666.

It is not a de Polignac number, because 64125711 - 2⁶ = 64125647 is a prime.

It is a super-2 number, since 2×64125711² = 8224213622511042, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64125781) 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, 273925 + ... + 274158.

Almost surely, 2^64125711 is an apocalyptic number.

64125711 is a deficient number, since it is larger than the sum of its proper divisors (35625577).

64125711 is a wasteful number, since it uses less digits than its factorization.

64125711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548102 (or 548099 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 64125711 is about 8007.8530830679. The cubic root of 64125711 is about 400.2617266272.

Adding to 64125711 its reverse (11752146), we get a palindrome (75877857).

The spelling of 64125711 in words is "sixty-four million, one hundred twenty-five thousand, seven hundred eleven".