1831725 has 36 divisors (see below), whose sum is σ = 3752736. Its totient is φ = 836640.

The previous prime is 1831723. The next prime is 1831741. The reversal of 1831725 is 5271381.

It is not a de Polignac number, because 1831725 - 2¹ = 1831723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1831723) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 994 + ... + 2156.

2^1831725 is an apocalyptic number.

1831725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1831725 is an abundant number, since it is smaller than the sum of its proper divisors (1921011).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1831725 is a wasteful number, since it uses less digits than its factorization.

1831725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186 (or 1178 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 1831725 is about 1353.4123540148. The cubic root of 1831725 is about 122.3545406605.

It can be divided in two parts, 1831 and 725, that added together give a triangular number (2556 = T₇₁).

The spelling of 1831725 in words is "one million, eight hundred thirty-one thousand, seven hundred twenty-five".