545520345525 has 18 divisors (see below), whose sum is σ = 977087552610. Its totient is φ = 290944184160.

The previous prime is 545520345499. The next prime is 545520345553. The reversal of 545520345525 is 525543025545.

545520345525 is a `hidden beast` number, since 5 + 4 + 552 + 0 + 3 + 45 + 52 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 22700243556 + 522820101969 = 150666^2 + 723063^2 .

It is not a de Polignac number, because 545520345525 - 2⁸ = 545520345269 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 a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1212267210 + ... + 1212267659.

Almost surely, 2^545520345525 is an apocalyptic number.

It is an amenable number.

545520345525 is a deficient number, since it is larger than the sum of its proper divisors (431567207085).

545520345525 is a wasteful number, since it uses less digits than its factorization.

545520345525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2424534885 (or 2424534877 counting only the distinct ones).

The product of its (nonzero) digits is 3000000, while the sum is 45.

The spelling of 545520345525 in words is "five hundred forty-five billion, five hundred twenty million, three hundred forty-five thousand, five hundred twenty-five".