43403472225 has 243 divisors, whose sum is σ = 89231667993. Its totient is φ = 20160161280.

The previous prime is 43403472173. The next prime is 43403472271. The reversal of 43403472225 is 52227430434.

43403472225 = 1³ + 2³ + ... + 645³.

The square root of 43403472225 is 208335.

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 1015250769 + 42388221456 = 31863^2 + 205884^2 .

It is not a de Polignac number, because 43403472225 - 2²⁹ = 42866601313 is a prime.

It is a super-2 number, since 2×43403472225² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 43403472225.

It is an unprimeable number.

It is a polite number, since it can be written in 242 ways as a sum of consecutive naturals, for example, 1009383054 + ... + 1009383096.

Almost surely, 2^43403472225 is an apocalyptic number.

43403472225 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

43403472225 is the 208335-th square number.

43403472225 is the 104168-th centered octagonal number.

It is an amenable number.

43403472225 is an abundant number, since it is smaller than the sum of its proper divisors (45828195768).

43403472225 is a wasteful number, since it uses less digits than its factorization.

43403472225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 36.

Multiplying 43403472225 by its sum of digits (36), we get a square (1562525000100 = 1250010²).

The spelling of 43403472225 in words is "forty-three billion, four hundred three million, four hundred seventy-two thousand, two hundred twenty-five".