561235532625 has 24 divisors (see below), whose sum is σ = 1011720588840. Its totient is φ = 299325616800.

The previous prime is 561235532587. The next prime is 561235532659. The reversal of 561235532625 is 526235532165.

It is a happy number.

561235532625 is a `hidden beast` number, since 5 + 6 + 12 + 3 + 5 + 5 + 3 + 2 + 625 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 583512336 + 560652020289 = 24156^2 + 748767^2 .

It is not a de Polignac number, because 561235532625 - 2⁸ = 561235532369 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 249436890 + ... + 249439139.

It is an arithmetic number, because the mean of its divisors is an integer number (42155024535).

Almost surely, 2^561235532625 is an apocalyptic number.

It is an amenable number.

561235532625 is a deficient number, since it is larger than the sum of its proper divisors (450485056215).

561235532625 is a wasteful number, since it uses less digits than its factorization.

561235532625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498876050 (or 498876037 counting only the distinct ones).

The product of its digits is 1620000, while the sum is 45.

The spelling of 561235532625 in words is "five hundred sixty-one billion, two hundred thirty-five million, five hundred thirty-two thousand, six hundred twenty-five".