1925729 has 8 divisors (see below), whose sum is σ = 2125032. Its totient is φ = 1733760.

The previous prime is 1925719. The next prime is 1925747. The reversal of 1925729 is 9275291.

It can be written as a sum of positive squares in 4 ways, for example, as 388129 + 1537600 = 623^2 + 1240^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1925729 - 2¹⁶ = 1860193 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1925719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1274 + ... + 2339.

It is an arithmetic number, because the mean of its divisors is an integer number (265629).

2^1925729 is an apocalyptic number.

It is an amenable number.

1925729 is a deficient number, since it is larger than the sum of its proper divisors (199303).

1925729 is a wasteful number, since it uses less digits than its factorization.

1925729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3667.

The product of its digits is 11340, while the sum is 35.

The square root of 1925729 is about 1387.7063810475. The cubic root of 1925729 is about 124.4127978686.

The spelling of 1925729 in words is "one million, nine hundred twenty-five thousand, seven hundred twenty-nine".