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2805625 = 54672
BaseRepresentation
bin1010101100111101111001
312021112121001
422230331321
51204240000
6140045001
732563444
oct12547571
95245531
102805625
1116469a9
12b33761
13773044
1453065b
153a646a
hex2acf79

2805625 has 15 divisors (see below), whose sum is σ = 3559017. Its totient is φ = 2211000.

The previous prime is 2805619. The next prime is 2805631. The reversal of 2805625 is 5265082.

The square root of 2805625 is 1675.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (2805619) and next prime (2805631).

It can be written as a sum of positive squares in 2 ways, for example, as 219961 + 2585664 = 469^2 + 1608^2 .

It is not a de Polignac number, because 2805625 - 27 = 2805497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2805593 and 2805602.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 41842 + ... + 41908.

22805625 is an apocalyptic number.

2805625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2805625 is the 1675-th square number.

2805625 is the 838-th centered octagonal number.

It is an amenable number.

2805625 is a deficient number, since it is larger than the sum of its proper divisors (753392).

2805625 is an frugal number, since it uses more digits than its factorization.

2805625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The cubic root of 2805625 is about 141.0402949737.

The spelling of 2805625 in words is "two million, eight hundred five thousand, six hundred twenty-five".