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1925 = 52711
BaseRepresentation
bin11110000101
32122022
4132011
530200
612525
75420
oct3605
92568
101925
1114a0
121145
13b51
149b7
15885
hex785

1925 has 12 divisors (see below), whose sum is σ = 2976. Its totient is φ = 1200.

The previous prime is 1913. The next prime is 1931. The reversal of 1925 is 5291.

1925 = 53 + 63 + ... + 93.

Together with 1050 it forms a betrothed pair.

It is not a de Polignac number, because 1925 - 26 = 1861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 9 and base 12.

It is a nialpdrome in base 7, base 13 and base 15.

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, 170 + ... + 180.

It is an arithmetic number, because the mean of its divisors is an integer number (248).

21925 is an apocalyptic number.

It is an amenable number.

1925 is a deficient number, since it is larger than the sum of its proper divisors (1051).

1925 is a wasteful number, since it uses less digits than its factorization.

1925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28 (or 23 counting only the distinct ones).

The product of its digits is 90, while the sum is 17.

The square root of 1925 is about 43.8748219370. The cubic root of 1925 is about 12.4397096736.

It can be divided in two parts, 19 and 25, that added together give a palindrome (44).

The spelling of 1925 in words is "one thousand, nine hundred twenty-five".

Divisors: 1 5 7 11 25 35 55 77 175 275 385 1925