143538688225 has 9 divisors (see below), whose sum is σ = 177990322393. Its totient is φ = 114829435120.

The previous prime is 143538688217. The next prime is 143538688229. The reversal of 143538688225 is 522886835341.

The square root of 143538688225 is 378865.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 81046687969 + 62492000256 = 284687^2 + 249984^2 .

It is not a de Polignac number, because 143538688225 - 2³ = 143538688217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143538688229) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1856439 + ... + 1932211.

Almost surely, 2^143538688225 is an apocalyptic number.

143538688225 is the 378865-th square number.

143538688225 is the 189433-rd centered octagonal number.

It is an amenable number.

143538688225 is a deficient number, since it is larger than the sum of its proper divisors (34451634168).

143538688225 is an frugal number, since it uses more digits than its factorization.

143538688225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151556 (or 75778 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 55.

The spelling of 143538688225 in words is "one hundred forty-three billion, five hundred thirty-eight million, six hundred eighty-eight thousand, two hundred twenty-five".