69444375625 has 20 divisors (see below), whose sum is σ = 86833145124. Its totient is φ = 55520000000.

The previous prime is 69444375521. The next prime is 69444375691. The reversal of 69444375625 is 52657344496.

It is a happy number.

It can be written as a sum of positive squares in 10 ways, for example, as 23269671936 + 46174703689 = 152544^2 + 214883^2 .

It is not a de Polignac number, because 69444375625 - 2¹¹ = 69444373577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 965925 + ... + 1035325.

Almost surely, 2^69444375625 is an apocalyptic number.

It is an amenable number.

69444375625 is a deficient number, since it is larger than the sum of its proper divisors (17388769499).

69444375625 is an equidigital number, since it uses as much as digits as its factorization.

69444375625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71022 (or 71007 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 55.

The spelling of 69444375625 in words is "sixty-nine billion, four hundred forty-four million, three hundred seventy-five thousand, six hundred twenty-five".