43445149225 has 9 divisors (see below), whose sum is σ = 53873277367. Its totient is φ = 34755285640.

The previous prime is 43445149207. The next prime is 43445149229. The reversal of 43445149225 is 52294154434.

The square root of 43445149225 is 208435.

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

It can be written as a sum of positive squares in only one way, i.e., 15640253721 + 27804895504 = 125061^2 + 166748^2 .

It is not a de Polignac number, because 43445149225 - 2²⁹ = 42908278313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43445149229) 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, 1021332 + ... + 1063018.

Almost surely, 2^43445149225 is an apocalyptic number.

43445149225 is the 208435-th square number.

43445149225 is the 104218-th centered octagonal number.

It is an amenable number.

43445149225 is a deficient number, since it is larger than the sum of its proper divisors (10428128142).

43445149225 is an frugal number, since it uses more digits than its factorization.

43445149225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83384 (or 41692 counting only the distinct ones).

The product of its digits is 691200, while the sum is 43.

The spelling of 43445149225 in words is "forty-three billion, four hundred forty-five million, one hundred forty-nine thousand, two hundred twenty-five".