325574497561 has 4 divisors (see below), whose sum is σ = 344725938612. Its totient is φ = 306423056512.

The previous prime is 325574497541. The next prime is 325574497579. The reversal of 325574497561 is 165794475523.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 288804134025 + 36770363536 = 537405^2 + 191756^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-325574497561 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 325574497496 and 325574497505.

It is not an unprimeable number, because it can be changed into a prime (325574497531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9575720500 + ... + 9575720533.

It is an arithmetic number, because the mean of its divisors is an integer number (86181484653).

Almost surely, 2^325574497561 is an apocalyptic number.

It is an amenable number.

325574497561 is a deficient number, since it is larger than the sum of its proper divisors (19151441051).

325574497561 is a wasteful number, since it uses less digits than its factorization.

325574497561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19151441050.

The product of its digits is 31752000, while the sum is 58.

The spelling of 325574497561 in words is "three hundred twenty-five billion, five hundred seventy-four million, four hundred ninety-seven thousand, five hundred sixty-one".