143525481 has 24 divisors (see below), whose sum is σ = 212268000. Its totient is φ = 86190720.

The previous prime is 143525477. The next prime is 143525489. The reversal of 143525481 is 184525341.

It is not a de Polignac number, because 143525481 - 2² = 143525477 is a prime.

It is a super-2 number, since 2×143525481² = 41199127392562722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (143525489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39270 + ... + 42768.

It is an arithmetic number, because the mean of its divisors is an integer number (8844500).

Almost surely, 2^143525481 is an apocalyptic number.

143525481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

143525481 is a deficient number, since it is larger than the sum of its proper divisors (68742519).

143525481 is a wasteful number, since it uses less digits than its factorization.

143525481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3637 (or 3626 counting only the distinct ones).

The product of its digits is 19200, while the sum is 33.

The square root of 143525481 is about 11980.2120598928. The cubic root of 143525481 is about 523.5719084333.

The spelling of 143525481 in words is "one hundred forty-three million, five hundred twenty-five thousand, four hundred eighty-one".