20625416 has 48 divisors (see below), whose sum is σ = 46045440. Its totient is φ = 8475840.

The previous prime is 20625413. The next prime is 20625421. The reversal of 20625416 is 61452602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20625413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189170 + ... + 189278.

It is an arithmetic number, because the mean of its divisors is an integer number (959280).

Almost surely, 2^20625416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20625416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23022720).

20625416 is an abundant number, since it is smaller than the sum of its proper divisors (25420024).

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

20625416 is a wasteful number, since it uses less digits than its factorization.

20625416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 20625416 is about 4541.5213310079. The cubic root of 20625416 is about 274.2421713907.

The spelling of 20625416 in words is "twenty million, six hundred twenty-five thousand, four hundred sixteen".