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4720825 = 52188833
BaseRepresentation
bin10010000000100010111001
322212211202101
4102000202321
52202031300
6245103401
755061224
oct22004271
98784671
104720825
11273490a
1216b7b61
13c939b5
148ac5bb
15633b6a
hex4808b9

4720825 has 6 divisors (see below), whose sum is σ = 5853854. Its totient is φ = 3776640.

The previous prime is 4720817. The next prime is 4720843. The reversal of 4720825 is 5280274.

4720825 is nontrivially palindromic in base 12.

It can be written as a sum of positive squares in 3 ways, for example, as 1227664 + 3493161 = 1108^2 + 1869^2 .

It is not a de Polignac number, because 4720825 - 23 = 4720817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4720793 and 4720802.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 94392 + ... + 94441.

Almost surely, 24720825 is an apocalyptic number.

It is an amenable number.

4720825 is a deficient number, since it is larger than the sum of its proper divisors (1133029).

4720825 is a wasteful number, since it uses less digits than its factorization.

4720825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188843 (or 188838 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 4720825 is about 2172.7459584590. The cubic root of 4720825 is about 167.7539031891.

The spelling of 4720825 in words is "four million, seven hundred twenty thousand, eight hundred twenty-five".

Divisors: 1 5 25 188833 944165 4720825