72425 has 6 divisors (see below), whose sum is σ = 89838. Its totient is φ = 57920.

The previous prime is 72421. The next prime is 72431. The reversal of 72425 is 52427.

It can be written as a sum of positive squares in 3 ways, for example, as 64 + 72361 = 8^2 + 269^2 .

It is not a de Polignac number, because 72425 - 2² = 72421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72397 and 72406.

It is not an unprimeable number, because it can be changed into a prime (72421) 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, 1424 + ... + 1473.

It is an arithmetic number, because the mean of its divisors is an integer number (14973).

2⁷²⁴²⁵ is an apocalyptic number.

It is an amenable number.

72425 is a deficient number, since it is larger than the sum of its proper divisors (17413).

72425 is a wasteful number, since it uses less digits than its factorization.

72425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2907 (or 2902 counting only the distinct ones).

The product of its digits is 560, while the sum is 20.

The square root of 72425 is about 269.1189328160. The cubic root of 72425 is about 41.6833710800.

The spelling of 72425 in words is "seventy-two thousand, four hundred twenty-five".