1722825 has 72 divisors (see below), whose sum is σ = 3610880. Its totient is φ = 777600.

The previous prime is 1722821. The next prime is 1722829. The reversal of 1722825 is 5282271.

It is an interprime number because it is at equal distance from previous prime (1722821) and next prime (1722829).

It is not a de Polignac number, because 1722825 - 2² = 1722821 is a prime.

It is a super-4 number, since 4×1722825⁴ (a number of 26 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (1722821) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 55560 + ... + 55590.

2^1722825 is an apocalyptic number.

1722825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1722825 is an abundant number, since it is smaller than the sum of its proper divisors (1888055).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1722825 is a wasteful number, since it uses less digits than its factorization.

1722825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 71 counting only the distinct ones).

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

The square root of 1722825 is about 1312.5642841400. The cubic root of 1722825 is about 119.8800885503.

The spelling of 1722825 in words is "one million, seven hundred twenty-two thousand, eight hundred twenty-five".