1722925 has 6 divisors (see below), whose sum is σ = 2136458. Its totient is φ = 1378320.

The previous prime is 1722923. The next prime is 1722937. The reversal of 1722925 is 5292271.

It can be written as a sum of positive squares in 3 ways, for example, as 51076 + 1671849 = 226^2 + 1293^2 .

It is not a de Polignac number, because 1722925 - 2¹ = 1722923 is a prime.

It is a Duffinian number.

1722925 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1722893 and 1722902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1722923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34434 + ... + 34483.

2^1722925 is an apocalyptic number.

It is an amenable number.

1722925 is a deficient number, since it is larger than the sum of its proper divisors (413533).

1722925 is an equidigital number, since it uses as much as digits as its factorization.

1722925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68927 (or 68922 counting only the distinct ones).

The product of its digits is 2520, while the sum is 28.

The square root of 1722925 is about 1312.6023769596. The cubic root of 1722925 is about 119.8824079534.

The spelling of 1722925 in words is "one million, seven hundred twenty-two thousand, nine hundred twenty-five".