1840725 has 42 divisors (see below), whose sum is σ = 3456066. Its totient is φ = 972000.

The previous prime is 1840723. The next prime is 1840733. The reversal of 1840725 is 5270481.

It can be written as a sum of positive squares in 3 ways, for example, as 492804 + 1347921 = 702^2 + 1161^2 .

It is not a de Polignac number, because 1840725 - 2¹ = 1840723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1840723) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 18175 + ... + 18275.

2^1840725 is an apocalyptic number.

1840725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1840725 is a deficient number, since it is larger than the sum of its proper divisors (1615341).

1840725 is an equidigital number, since it uses as much as digits as its factorization.

1840725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 1840725 is about 1356.7332088513. The cubic root of 1840725 is about 122.5546056706.

The spelling of 1840725 in words is "one million, eight hundred forty thousand, seven hundred twenty-five".