16120625 has 10 divisors (see below), whose sum is σ = 20145114. Its totient is φ = 12896000.

The previous prime is 16120619. The next prime is 16120627. The reversal of 16120625 is 52602161.

It can be written as a sum of positive squares in 5 ways, for example, as 10394176 + 5726449 = 3224^2 + 2393^2 .

It is not a de Polignac number, because 16120625 - 2¹⁸ = 15858481 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16120625.

It is not an unprimeable number, because it can be changed into a prime (16120627) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12272 + ... + 13521.

Almost surely, 2^16120625 is an apocalyptic number.

It is an amenable number.

16120625 is a deficient number, since it is larger than the sum of its proper divisors (4024489).

16120625 is an frugal number, since it uses more digits than its factorization.

16120625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25813 (or 25798 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 16120625 is about 4015.0498128915. The cubic root of 16120625 is about 252.6158668309.

Adding to 16120625 its reverse (52602161), we get a palindrome (68722786).

The spelling of 16120625 in words is "sixteen million, one hundred twenty thousand, six hundred twenty-five".