1616511125 has 16 divisors (see below), whose sum is σ = 2018780400. Its totient is φ = 1292328000.

The previous prime is 1616511121. The next prime is 1616511131. The reversal of 1616511125 is 5211156161.

It can be written as a sum of positive squares in 8 ways, for example, as 783496081 + 833015044 = 27991^2 + 28862^2 .

It is not a de Polignac number, because 1616511125 - 2² = 1616511121 is a prime.

It is a super-2 number, since 2×1616511125² = 5226216434497531250, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616511121) 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, 229151 + ... + 236099.

It is an arithmetic number, because the mean of its divisors is an integer number (126173775).

Almost surely, 2^1616511125 is an apocalyptic number.

It is an amenable number.

1616511125 is a deficient number, since it is larger than the sum of its proper divisors (402269275).

1616511125 is an equidigital number, since it uses as much as digits as its factorization.

1616511125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8825 (or 8815 counting only the distinct ones).

The product of its digits is 1800, while the sum is 29.

The square root of 1616511125 is about 40205.8593366688. The cubic root of 1616511125 is about 1173.6165700864.

Adding to 1616511125 its reverse (5211156161), we get a palindrome (6827667286).

The spelling of 1616511125 in words is "one billion, six hundred sixteen million, five hundred eleven thousand, one hundred twenty-five".