229785525 has 144 divisors (see below), whose sum is σ = 476219520. Its totient is φ = 108345600.

The previous prime is 229785497. The next prime is 229785533. The reversal of 229785525 is 525587922.

229785525 is a `hidden beast` number, since 2 + 2 + 97 + 8 + 552 + 5 = 666.

It is not a de Polignac number, because 229785525 - 2⁹ = 229785013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5604505 + ... + 5604545.

It is an arithmetic number, because the mean of its divisors is an integer number (3307080).

Almost surely, 2^229785525 is an apocalyptic number.

229785525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

229785525 is an abundant number, since it is smaller than the sum of its proper divisors (246433995).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

229785525 is a wasteful number, since it uses less digits than its factorization.

229785525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 91 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The square root of 229785525 is about 15158.6782075483. The cubic root of 229785525 is about 612.5020630223.

The spelling of 229785525 in words is "two hundred twenty-nine million, seven hundred eighty-five thousand, five hundred twenty-five".