1601616125 has 16 divisors (see below), whose sum is σ = 2017514304. Its totient is φ = 1269307600.

The previous prime is 1601616103. The next prime is 1601616127. The reversal of 1601616125 is 5216161061.

It is not a de Polignac number, because 1601616125 - 2²⁸ = 1333180669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601616127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46499 + ... + 73248.

It is an arithmetic number, because the mean of its divisors is an integer number (126094644).

Almost surely, 2^1601616125 is an apocalyptic number.

It is an amenable number.

1601616125 is a deficient number, since it is larger than the sum of its proper divisors (415898179).

1601616125 is a wasteful number, since it uses less digits than its factorization.

1601616125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119869 (or 119859 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 1601616125 is about 40020.1964637856. The cubic root of 1601616125 is about 1170.0007609511. Note that the first 3 decimals are identical.

Adding to 1601616125 its reverse (5216161061), we get a palindrome (6817777186).

The spelling of 1601616125 in words is "one billion, six hundred one million, six hundred sixteen thousand, one hundred twenty-five".