20925450 has 216 divisors, whose sum is σ = 71393868. Its totient is φ = 4354560.

The previous prime is 20925439. The next prime is 20925467. The reversal of 20925450 is 5452902.

20925450 is a `hidden beast` number, since 209 + 2 + 5 + 450 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 4498641 + 16426809 = 2121^2 + 4053^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 286614 + ... + 286686.

Almost surely, 2^20925450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20925450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35696934).

20925450 is an abundant number, since it is smaller than the sum of its proper divisors (50468418).

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

20925450 is a wasteful number, since it uses less digits than its factorization.

20925450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 103 counting only the distinct ones).

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

The square root of 20925450 is about 4574.4343912663. The cubic root of 20925450 is about 275.5655578542.

The spelling of 20925450 in words is "twenty million, nine hundred twenty-five thousand, four hundred fifty".