43220331025 has 9 divisors (see below), whose sum is σ = 53594499451. Its totient is φ = 34575433240.

The previous prime is 43220330947. The next prime is 43220331043. The reversal of 43220331025 is 52013302234.

The square root of 43220331025 is 207895.

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., 15559319169 + 27661011856 = 124737^2 + 166316^2 .

It is not a de Polignac number, because 43220331025 - 2⁷ = 43220330897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1018686 + ... + 1060264.

Almost surely, 2^43220331025 is an apocalyptic number.

43220331025 is the 207895-th square number.

43220331025 is the 103948-th centered octagonal number.

It is an amenable number.

43220331025 is a deficient number, since it is larger than the sum of its proper divisors (10374168426).

43220331025 is an frugal number, since it uses more digits than its factorization.

43220331025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83168 (or 41584 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Multiplying 43220331025 by its sum of digits (25), we get a square (1080508275625 = 1039475²).

43220331025 divided by its sum of digits (25) gives a square (1728813241 = 41579²).

Adding to 43220331025 its reverse (52013302234), we get a palindrome (95233633259).

The spelling of 43220331025 in words is "forty-three billion, two hundred twenty million, three hundred thirty-one thousand, twenty-five".