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315625 = 55101
BaseRepresentation
bin1001101000011101001
3121000221211
41031003221
540100000
610433121
72453122
oct1150351
9530854
10315625
111a6152
121327a1
13b087b
1483049
15637ba
hex4d0e9

315625 has 12 divisors (see below), whose sum is σ = 398412. Its totient is φ = 250000.

The previous prime is 315617. The next prime is 315631. The reversal of 315625 is 526513.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 177241 + 138384 = 421^2 + 372^2 .

It is not a de Polignac number, because 315625 - 23 = 315617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 315596 and 315605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3075 + ... + 3175.

It is an arithmetic number, because the mean of its divisors is an integer number (33201).

315625 is a Friedman number, since it can be written as 63125*5, using all its digits and the basic arithmetic operations.

2315625 is an apocalyptic number.

It is an amenable number.

315625 is a deficient number, since it is larger than the sum of its proper divisors (82787).

315625 is an frugal number, since it uses more digits than its factorization.

315625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 106 counting only the distinct ones).

The product of its digits is 900, while the sum is 22.

The square root of 315625 is about 561.8051263561. The cubic root of 315625 is about 68.0858920392.

The spelling of 315625 in words is "three hundred fifteen thousand, six hundred twenty-five".

Divisors: 1 5 25 101 125 505 625 2525 3125 12625 63125 315625