1409825 has 6 divisors (see below), whose sum is σ = 1748214. Its totient is φ = 1127840.

The previous prime is 1409803. The next prime is 1409833. The reversal of 1409825 is 5289041.

It can be written as a sum of positive squares in 3 ways, for example, as 43264 + 1366561 = 208^2 + 1169^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1409825 is a prime.

It is a Duffinian number.

It is a Curzon 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, 28172 + ... + 28221.

It is an arithmetic number, because the mean of its divisors is an integer number (291369).

2^1409825 is an apocalyptic number.

It is an amenable number.

1409825 is a deficient number, since it is larger than the sum of its proper divisors (338389).

1409825 is an equidigital number, since it uses as much as digits as its factorization.

1409825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56403 (or 56398 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1409825 is about 1187.3605181241. The cubic root of 1409825 is about 112.1299777145.

The spelling of 1409825 in words is "one million, four hundred nine thousand, eight hundred twenty-five".