16442244125 has 16 divisors (see below), whose sum is σ = 20528192880. Its totient is φ = 13148492800.

The previous prime is 16442244109. The next prime is 16442244139. The reversal of 16442244125 is 52144224461.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 6889332004 + 9552912121 = 83002^2 + 97739^2 .

It is not a de Polignac number, because 16442244125 - 2⁴ = 16442244109 is a prime.

It is a super-3 number, since 3×16442244125³ (a number of 32 digits) contains 333 as substring.

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, 300917 + ... + 351333.

It is an arithmetic number, because the mean of its divisors is an integer number (1283012055).

Almost surely, 2^16442244125 is an apocalyptic number.

It is an amenable number.

16442244125 is a deficient number, since it is larger than the sum of its proper divisors (4085948755).

16442244125 is an equidigital number, since it uses as much as digits as its factorization.

16442244125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53041 (or 53031 counting only the distinct ones).

The product of its digits is 61440, while the sum is 35.

Adding to 16442244125 its reverse (52144224461), we get a palindrome (68586468586).

The spelling of 16442244125 in words is "sixteen billion, four hundred forty-two million, two hundred forty-four thousand, one hundred twenty-five".