16265625 has 28 divisors (see below), whose sum is σ = 27187152. Its totient is φ = 8650000.

The previous prime is 16265621. The next prime is 16265629. The reversal of 16265625 is 52656261.

It is a happy number.

16265625 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16265621) and next prime (16265629).

It is not a de Polignac number, because 16265625 - 2² = 16265621 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16265621) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 46702 + ... + 47048.

Almost surely, 2^16265625 is an apocalyptic number.

16265625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16265625 is a deficient number, since it is larger than the sum of its proper divisors (10921527).

16265625 is an frugal number, since it uses more digits than its factorization.

16265625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380 (or 355 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 16265625 is about 4033.0664512254. The cubic root of 16265625 is about 253.3710075934.

It can be divided in two parts, 1 and 6265625, that added together give a palindrome (6265626).

The spelling of 16265625 in words is "sixteen million, two hundred sixty-five thousand, six hundred twenty-five".