1525560561 has 72 divisors (see below), whose sum is σ = 2744711424. Its totient is φ = 843423840.

The previous prime is 1525560551. The next prime is 1525560563. The reversal of 1525560561 is 1650655251.

1525560561 is a `hidden beast` number, since 1 + 52 + 556 + 0 + 56 + 1 = 666.

It is not a de Polignac number, because 1525560561 - 2¹⁴ = 1525544177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1525560563) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 367051 + ... + 371183.

It is an arithmetic number, because the mean of its divisors is an integer number (38120992).

Almost surely, 2^1525560561 is an apocalyptic number.

It is an amenable number.

1525560561 is a deficient number, since it is larger than the sum of its proper divisors (1219150863).

1525560561 is an equidigital number, since it uses as much as digits as its factorization.

1525560561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4193 (or 4174 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The square root of 1525560561 is about 39058.4249682447. The cubic root of 1525560561 is about 1151.1797750244.

The spelling of 1525560561 in words is "one billion, five hundred twenty-five million, five hundred sixty thousand, five hundred sixty-one".