1872725 has 12 divisors (see below), whose sum is σ = 2340996. Its totient is φ = 1486080.

The previous prime is 1872721. The next prime is 1872727. The reversal of 1872725 is 5272781.

It can be written as a sum of positive squares in 6 ways, for example, as 28561 + 1844164 = 169^2 + 1358^2 .

It is not a de Polignac number, because 1872725 - 2² = 1872721 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1872691 and 1872700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1872721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4109 + ... + 4541.

It is an arithmetic number, because the mean of its divisors is an integer number (195083).

2^1872725 is an apocalyptic number.

It is an amenable number.

1872725 is a deficient number, since it is larger than the sum of its proper divisors (468271).

1872725 is a wasteful number, since it uses less digits than its factorization.

1872725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616 (or 611 counting only the distinct ones).

The product of its digits is 7840, while the sum is 32.

The square root of 1872725 is about 1368.4754290816. The cubic root of 1872725 is about 123.2607112437.

The spelling of 1872725 in words is "one million, eight hundred seventy-two thousand, seven hundred twenty-five".