64125534 has 32 divisors (see below), whose sum is σ = 141283584. Its totient is φ = 19241280.

The previous prime is 64125511. The next prime is 64125563. The reversal of 64125534 is 43552146.

It is a super-2 number, since 2×64125534² = 8224168221570312, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2082 + ... + 11514.

It is an arithmetic number, because the mean of its divisors is an integer number (4415112).

Almost surely, 2^64125534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64125534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70641792).

64125534 is an abundant number, since it is smaller than the sum of its proper divisors (77158050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64125534 is a wasteful number, since it uses less digits than its factorization.

64125534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9552.

The product of its digits is 14400, while the sum is 30.

The square root of 64125534 is about 8007.8420314090. The cubic root of 64125534 is about 400.2613583590.

The spelling of 64125534 in words is "sixty-four million, one hundred twenty-five thousand, five hundred thirty-four".