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381925 = 5215277
BaseRepresentation
bin1011101001111100101
3201101220101
41131033211
544210200
612104101
73150325
oct1351745
9641811
10381925
11240a45
12165031
13104abb
149d285
157826a
hex5d3e5

381925 has 6 divisors (see below), whose sum is σ = 473618. Its totient is φ = 305520.

The previous prime is 381917. The next prime is 381937. The reversal of 381925 is 529183.

It is a Cunningham number, because it is equal to 6182+1.

It can be written as a sum of positive squares in 3 ways, for example, as 1 + 381924 = 1^2 + 618^2 .

It is not a de Polignac number, because 381925 - 23 = 381917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 381893 and 381902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7614 + ... + 7663.

2381925 is an apocalyptic number.

It is an amenable number.

381925 is a deficient number, since it is larger than the sum of its proper divisors (91693).

381925 is a wasteful number, since it uses less digits than its factorization.

381925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15287 (or 15282 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 381925 is about 618.0008090610. Note that the first 3 decimals coincide. The cubic root of 381925 is about 72.5536661709.

It can be divided in two parts, 3819 and 25, that added together give a square (3844 = 622).

The spelling of 381925 in words is "three hundred eighty-one thousand, nine hundred twenty-five".

Divisors: 1 5 25 15277 76385 381925