509161290525 has 24 divisors (see below), whose sum is σ = 935348149760. Its totient is φ = 271552687920.

The previous prime is 509161290511. The next prime is 509161290611. The reversal of 509161290525 is 525092161905.

509161290525 is a `hidden beast` number, since 5 + 0 + 9 + 1 + 612 + 9 + 0 + 5 + 25 = 666.

509161290525 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 509161290525 - 2¹¹ = 509161288477 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 23 ways as a sum of consecutive naturals, for example, 377155837 + ... + 377157186.

Almost surely, 2^509161290525 is an apocalyptic number.

It is an amenable number.

509161290525 is a deficient number, since it is larger than the sum of its proper divisors (426186859235).

509161290525 is a wasteful number, since it uses less digits than its factorization.

509161290525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754313042 (or 754313031 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The spelling of 509161290525 in words is "five hundred nine billion, one hundred sixty-one million, two hundred ninety thousand, five hundred twenty-five".