16625025 has 36 divisors (see below), whose sum is σ = 30597372. Its totient is φ = 8622720.

The previous prime is 16625023. The next prime is 16625029. The reversal of 16625025 is 52052661.

16625025 is a `hidden beast` number, since 16 + 625 + 0 + 25 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 848241 + 15776784 = 921^2 + 3972^2 .

It is not a de Polignac number, because 16625025 - 2¹ = 16625023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16625025.

It is not an unprimeable number, because it can be changed into a prime (16625023) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7327 + ... + 9323.

It is an arithmetic number, because the mean of its divisors is an integer number (849927).

Almost surely, 2^16625025 is an apocalyptic number.

16625025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16625025 is a deficient number, since it is larger than the sum of its proper divisors (13972347).

16625025 is a wasteful number, since it uses less digits than its factorization.

16625025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050 (or 2042 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 16625025 is about 4077.3796732706. The cubic root of 16625025 is about 255.2235640316.

Adding to 16625025 its reverse (52052661), we get a palindrome (68677686).

The spelling of 16625025 in words is "sixteen million, six hundred twenty-five thousand, twenty-five".