2231725 has 6 divisors (see below), whose sum is σ = 2767370. Its totient is φ = 1785360.

The previous prime is 2231717. The next prime is 2231731. The reversal of 2231725 is 5271322.

It can be written as a sum of positive squares in 3 ways, for example, as 59049 + 2172676 = 243^2 + 1474^2 .

It is not a de Polignac number, because 2231725 - 2³ = 2231717 is a prime.

It is a super-3 number, since 3×2231725³ = 33345965008692609375, which contains 333 as substring.

2231725 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2231696 and 2231705.

It is a congruent 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, 44610 + ... + 44659.

2^2231725 is an apocalyptic number.

2231725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2231725 is a deficient number, since it is larger than the sum of its proper divisors (535645).

2231725 is an equidigital number, since it uses as much as digits as its factorization.

2231725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89279 (or 89274 counting only the distinct ones).

The product of its digits is 840, while the sum is 22.

The square root of 2231725 is about 1493.8959133755. The cubic root of 2231725 is about 130.6813341106.

The spelling of 2231725 in words is "two million, two hundred thirty-one thousand, seven hundred twenty-five".