1964385725 has 12 divisors (see below), whose sum is σ = 2541745056. Its totient is φ = 1503181680.

The previous prime is 1964385721. The next prime is 1964385739. The reversal of 1964385725 is 5275834691.

It is a happy number.

It is not a de Polignac number, because 1964385725 - 2² = 1964385721 is a prime.

It is a super-2 number, since 2×1964385725² = 7717622553167551250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1964385721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1707587 + ... + 1708736.

It is an arithmetic number, because the mean of its divisors is an integer number (211812088).

Almost surely, 2^1964385725 is an apocalyptic number.

It is an amenable number.

1964385725 is a deficient number, since it is larger than the sum of its proper divisors (577359331).

1964385725 is a wasteful number, since it uses less digits than its factorization.

1964385725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3416356 (or 3416351 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 50.

The square root of 1964385725 is about 44321.3912800580. The cubic root of 1964385725 is about 1252.3976859411.

The spelling of 1964385725 in words is "one billion, nine hundred sixty-four million, three hundred eighty-five thousand, seven hundred twenty-five".