64126725 has 48 divisors (see below), whose sum is σ = 115617600. Its totient is φ = 31173120.

The previous prime is 64126723. The next prime is 64126781. The reversal of 64126725 is 52762146.

It is not a de Polignac number, because 64126725 - 2¹ = 64126723 is a prime.

It is a super-2 number, since 2×64126725² = 8224473718451250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64126721) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86406 + ... + 87144.

It is an arithmetic number, because the mean of its divisors is an integer number (2408700).

Almost surely, 2^64126725 is an apocalyptic number.

64126725 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64126725 is a deficient number, since it is larger than the sum of its proper divisors (51490875).

64126725 is a wasteful number, since it uses less digits than its factorization.

64126725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854 (or 849 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 64126725 is about 8007.9163956675. The cubic root of 64126725 is about 400.2638363544.

The spelling of 64126725 in words is "sixty-four million, one hundred twenty-six thousand, seven hundred twenty-five".