1616344625 has 32 divisors (see below), whose sum is σ = 2352480000. Its totient is φ = 1108321200.

The previous prime is 1616344603. The next prime is 1616344627. The reversal of 1616344625 is 5264436161.

It is not a de Polignac number, because 1616344625 - 2¹² = 1616340529 is a prime.

It is a super-2 number, since 2×1616344625² = 5225139893532781250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1616344627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24026 + ... + 61724.

It is an arithmetic number, because the mean of its divisors is an integer number (73515000).

Almost surely, 2^1616344625 is an apocalyptic number.

It is an amenable number.

1616344625 is a deficient number, since it is larger than the sum of its proper divisors (736135375).

1616344625 is an frugal number, since it uses more digits than its factorization.

1616344625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37735 (or 37711 counting only the distinct ones).

The product of its digits is 103680, while the sum is 38.

The square root of 1616344625 is about 40203.7886896248. The cubic root of 1616344625 is about 1173.5762746903.

The spelling of 1616344625 in words is "one billion, six hundred sixteen million, three hundred forty-four thousand, six hundred twenty-five".