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2725 = 52109
BaseRepresentation
bin101010100101
310201221
4222211
541400
620341
710642
oct5245
93657
102725
112058
1216b1
131318
14dc9
15c1a
hexaa5

2725 has 6 divisors (see below), whose sum is σ = 3410. Its totient is φ = 2160.

The previous prime is 2719. The next prime is 2729. The reversal of 2725 is 5272.

Adding to 2725 its reverse (5272), we get a palindrome (7997).

It can be divided in two parts, 2 and 725, that added together give a palindrome (727).

It is a happy number.

2725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 324 + 2401 = 18^2 + 49^2 .

It is not a de Polignac number, because 2725 - 25 = 2693 is a prime.

It is an alternating number because its digits alternate between even and odd.

2725 is a lucky number.

It is a nialpdrome in base 4, base 14 and base 16.

It is a zygodrome in base 4.

It is a junction number, because it is equal to n+sod(n) for n = 2699 and 2708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30 + ... + 79.

22725 is an apocalyptic number.

2725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2725 is a deficient number, since it is larger than the sum of its proper divisors (685).

2725 is a wasteful number, since it uses less digits than its factorization.

2725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 114 counting only the distinct ones).

The product of its digits is 140, while the sum is 16.

The square root of 2725 is about 52.2015325446. The cubic root of 2725 is about 13.9676122062.

The spelling of 2725 in words is "two thousand, seven hundred twenty-five".

Divisors: 1 5 25 109 545 2725