525156489 has 48 divisors (see below), whose sum is σ = 908107200. Its totient is φ = 288213120.

The previous prime is 525156479. The next prime is 525156491. The reversal of 525156489 is 984651525.

525156489 is a `hidden beast` number, since 5 + 2 + 5 + 1 + 564 + 89 = 666.

It is not a de Polignac number, because 525156489 - 2¹⁶ = 525090953 is a prime.

It is a super-3 number, since 3×525156489³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (525156419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64362 + ... + 72060.

It is an arithmetic number, because the mean of its divisors is an integer number (18918900).

Almost surely, 2^525156489 is an apocalyptic number.

It is an amenable number.

525156489 is a deficient number, since it is larger than the sum of its proper divisors (382950711).

525156489 is a wasteful number, since it uses less digits than its factorization.

525156489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7782 (or 7779 counting only the distinct ones).

The product of its digits is 432000, while the sum is 45.

The square root of 525156489 is about 22916.2930902884. The cubic root of 525156489 is about 806.7944686482.

The spelling of 525156489 in words is "five hundred twenty-five million, one hundred fifty-six thousand, four hundred eighty-nine".