143664225 has 48 divisors (see below), whose sum is σ = 251858880. Its totient is φ = 72057600.

The previous prime is 143664167. The next prime is 143664253. The reversal of 143664225 is 522466341.

It is not a de Polignac number, because 143664225 - 2⁷ = 143664097 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 257647 + ... + 258203.

It is an arithmetic number, because the mean of its divisors is an integer number (5247060).

Almost surely, 2^143664225 is an apocalyptic number.

143664225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

143664225 is a deficient number, since it is larger than the sum of its proper divisors (108194655).

143664225 is a wasteful number, since it uses less digits than its factorization.

143664225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770 (or 765 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 143664225 is about 11986.0012097446. The cubic root of 143664225 is about 523.7405638885.

The spelling of 143664225 in words is "one hundred forty-three million, six hundred sixty-four thousand, two hundred twenty-five".