1881725 has 6 divisors (see below), whose sum is σ = 2333370. Its totient is φ = 1505360.

The previous prime is 1881697. The next prime is 1881749. The reversal of 1881725 is 5271881.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 88804 + 1792921 = 298^2 + 1339^2 .

It is not a de Polignac number, because 1881725 - 2¹⁰ = 1880701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1881691 and 1881700.

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, 37610 + ... + 37659.

It is an arithmetic number, because the mean of its divisors is an integer number (388895).

2^1881725 is an apocalyptic number.

It is an amenable number.

1881725 is a deficient number, since it is larger than the sum of its proper divisors (451645).

1881725 is an equidigital number, since it uses as much as digits as its factorization.

1881725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75279 (or 75274 counting only the distinct ones).

The product of its digits is 4480, while the sum is 32.

The square root of 1881725 is about 1371.7598186272. The cubic root of 1881725 is about 123.4578524898.

The spelling of 1881725 in words is "one million, eight hundred eighty-one thousand, seven hundred twenty-five".