16625000 has 112 divisors (see below), whose sum is σ = 46874400. Its totient is φ = 5400000.

The previous prime is 16624999. The next prime is 16625009. The reversal of 16625000 is 52661.

It is a sliding number, since 16625000 = 625000 + 16000000 and 1/625000 + 1/16000000 = 0.0000016625000.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (16625009) 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, 874991 + ... + 875009.

Almost surely, 2^16625000 is an apocalyptic number.

16625000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16625000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23437200).

16625000 is an abundant number, since it is smaller than the sum of its proper divisors (30249400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16625000 is an frugal number, since it uses more digits than its factorization.

16625000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62 (or 33 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 16625000 is about 4077.3766075750. The cubic root of 16625000 is about 255.2234361001.

Adding to 16625000 its reverse (52661), we get a palindrome (16677661).

It can be divided in two parts, 16 and 625000, that multiplied together give a 7-th power (10000000 = 10⁷).

The spelling of 16625000 in words is "sixteen million, six hundred twenty-five thousand".