561419725 has 12 divisors (see below), whose sum is σ = 709297236. Its totient is φ = 440660480.

The previous prime is 561419723. The next prime is 561419753. The reversal of 561419725 is 527914165.

It can be written as a sum of positive squares in 6 ways, for example, as 52330756 + 509088969 = 7234^2 + 22563^2 .

It is not a de Polignac number, because 561419725 - 2¹ = 561419723 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561419723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 210532 + ... + 213181.

It is an arithmetic number, because the mean of its divisors is an integer number (59108103).

Almost surely, 2^561419725 is an apocalyptic number.

It is an amenable number.

561419725 is a deficient number, since it is larger than the sum of its proper divisors (147877511).

561419725 is a wasteful number, since it uses less digits than its factorization.

561419725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423776 (or 423771 counting only the distinct ones).

The product of its digits is 75600, while the sum is 40.

The square root of 561419725 is about 23694.2973096904. The cubic root of 561419725 is about 824.9530306899.

The spelling of 561419725 in words is "five hundred sixty-one million, four hundred nineteen thousand, seven hundred twenty-five".