64125511 has 2 divisors, whose sum is σ = 64125512. Its totient is φ = 64125510.

The previous prime is 64125493. The next prime is 64125563. The reversal of 64125511 is 11552146.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64125511 - 2²³ = 55736903 is a prime.

It is a super-2 number, since 2×64125511² = 8224162322022242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64105511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32062755 + 32062756.

It is an arithmetic number, because the mean of its divisors is an integer number (32062756).

Almost surely, 2^64125511 is an apocalyptic number.

64125511 is a deficient number, since it is larger than the sum of its proper divisors (1).

64125511 is an equidigital number, since it uses as much as digits as its factorization.

64125511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 25.

The square root of 64125511 is about 8007.8405953166. The cubic root of 64125511 is about 400.2613105049.

Adding to 64125511 its reverse (11552146), we get a palindrome (75677657).

The spelling of 64125511 in words is "sixty-four million, one hundred twenty-five thousand, five hundred eleven".