561425 has 12 divisors (see below), whose sum is σ = 737676. Its totient is φ = 422400.

The previous prime is 561419. The next prime is 561439. The reversal of 561425 is 524165.

It can be written as a sum of positive squares in 6 ways, for example, as 37249 + 524176 = 193^2 + 724^2 .

It is not a de Polignac number, because 561425 - 2⁴ = 561409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 561425.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 236 + ... + 1085.

It is an arithmetic number, because the mean of its divisors is an integer number (61473).

2⁵⁶¹⁴²⁵ is an apocalyptic number.

It is an amenable number.

561425 is a deficient number, since it is larger than the sum of its proper divisors (176251).

561425 is a wasteful number, since it uses less digits than its factorization.

561425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348 (or 1343 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 561425 is about 749.2829905983. The cubic root of 561425 is about 82.4955614386.

It can be divided in two parts, 56 and 1425, that multiplied together give a triangular number (79800 = T₃₉₉).

The spelling of 561425 in words is "five hundred sixty-one thousand, four hundred twenty-five".