16455625 has 20 divisors (see below), whose sum is σ = 20833956. Its totient is φ = 12992000.

The previous prime is 16455623. The next prime is 16455661. The reversal of 16455625 is 52655461.

It can be written as a sum of positive squares in 10 ways, for example, as 16451136 + 4489 = 4056^2 + 67^2 .

It is not a de Polignac number, because 16455625 - 2¹ = 16455623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16455623) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 70509 + ... + 70741.

Almost surely, 2^16455625 is an apocalyptic number.

It is an amenable number.

16455625 is a deficient number, since it is larger than the sum of its proper divisors (4378331).

16455625 is an equidigital number, since it uses as much as digits as its factorization.

16455625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 351 counting only the distinct ones).

The product of its digits is 36000, while the sum is 34.

The square root of 16455625 is about 4056.5533399673. The cubic root of 16455625 is about 254.3537396684.

It can be divided in two parts, 16 and 455625, that multiplied together give a square (7290000 = 2700²).

The spelling of 16455625 in words is "sixteen million, four hundred fifty-five thousand, six hundred twenty-five".