16125625 has 10 divisors (see below), whose sum is σ = 20151362. Its totient is φ = 12900000.

The previous prime is 16125619. The next prime is 16125631. The reversal of 16125625 is 52652161.

It is an interprime number because it is at equal distance from previous prime (16125619) and next prime (16125631).

It can be written as a sum of positive squares in 5 ways, for example, as 6165289 + 9960336 = 2483^2 + 3156^2 .

It is not a de Polignac number, because 16125625 - 2⁷ = 16125497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16125593 and 16125602.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12276 + ... + 13525.

Almost surely, 2^16125625 is an apocalyptic number.

It is an amenable number.

16125625 is a deficient number, since it is larger than the sum of its proper divisors (4025737).

16125625 is an frugal number, since it uses more digits than its factorization.

16125625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25821 (or 25806 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 16125625 is about 4015.6724218990. The cubic root of 16125625 is about 252.6419813844.

Adding to 16125625 its reverse (52652161), we get a palindrome (68777786).

The spelling of 16125625 in words is "sixteen million, one hundred twenty-five thousand, six hundred twenty-five".