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195625 = 54313
BaseRepresentation
bin101111110000101001
3100221100101
4233300221
522230000
64105401
71443223
oct576051
9327311
10195625
11123a81
1295261
136b071
1451413
153ce6a
hex2fc29

195625 has 10 divisors (see below), whose sum is σ = 245234. Its totient is φ = 156000.

The previous prime is 195599. The next prime is 195659. The reversal of 195625 is 526591.

It can be divided in two parts, 195 and 625, that added together give a triangular number (820 = T40).

195625 is a nontrivial binomial coefficient, being equal to C(626, 2).

It can be written as a sum of positive squares in 5 ways, for example, as 143641 + 51984 = 379^2 + 228^2 .

It is not a de Polignac number, because 195625 - 25 = 195593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 195593 and 195602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 469 + ... + 781.

2195625 is an apocalyptic number.

195625 is the 625-th triangular number and also the 313-rd hexagonal number.

195625 is the 209-th centered nonagonal number.

It is an amenable number.

195625 is a deficient number, since it is larger than the sum of its proper divisors (49609).

195625 is an frugal number, since it uses more digits than its factorization.

195625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333 (or 318 counting only the distinct ones).

The product of its digits is 2700, while the sum is 28.

The square root of 195625 is about 442.2951503239. The cubic root of 195625 is about 58.0507878569.

The spelling of 195625 in words is "one hundred ninety-five thousand, six hundred twenty-five".

Divisors: 1 5 25 125 313 625 1565 7825 39125 195625