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2515625 = 56723
BaseRepresentation
bin1001100110001010101001
311201210210022
421212022221
51121000000
6125530225
730245120
oct11461251
94653708
102515625
111469032
12a13975
136a1048
14496ab7
1534a585
hex2662a9

2515625 has 28 divisors (see below), whose sum is σ = 3749952. Its totient is φ = 1650000.

The previous prime is 2515621. The next prime is 2515627. The reversal of 2515625 is 5265152.

It is not a de Polignac number, because 2515625 - 22 = 2515621 is a prime.

It is a Duffinian number.

Its product of digits (3000) is a multiple of the sum of its prime factors (60).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2515594 and 2515603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2515621) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 109364 + ... + 109386.

22515625 is an apocalyptic number.

2515625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2515625 is a deficient number, since it is larger than the sum of its proper divisors (1234327).

2515625 is an frugal number, since it uses more digits than its factorization.

2515625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60 (or 35 counting only the distinct ones).

The product of its digits is 3000, while the sum is 26.

The square root of 2515625 is about 1586.0721925562. The cubic root of 2515625 is about 136.0030456354.

It can be divided in two parts, 25 and 15625, that multiplied together give a 8-th power (390625 = 58).

The spelling of 2515625 in words is "two million, five hundred fifteen thousand, six hundred twenty-five".

Divisors: 1 5 7 23 25 35 115 125 161 175 575 625 805 875 2875 3125 4025 4375 14375 15625 20125 21875 71875 100625 109375 359375 503125 2515625