43035502421025 has 135 divisors (see below), whose sum is σ = 80864087336571. Its totient is φ = 22626517397760.

The previous prime is 43035502420979. The next prime is 43035502421059. The reversal of 43035502421025 is 52012420553034.

The square root of 43035502421025 is 6560145.

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

43035502421025 is a `hidden beast` number, since 4 + 3 + 0 + 3 + 5 + 502 + 42 + 102 + 5 = 666.

It can be written as a sum of positive squares in 13 ways, for example, as 42729976491489 + 305525929536 = 6536817^2 + 552744^2 .

It is a tau number, because it is divible by the number of its divisors (135).

It is not a de Polignac number, because 43035502421025 - 2¹⁷ = 43035502289953 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 21550075327 + ... + 21550077323.

Almost surely, 2^{43035502421025} is an apocalyptic number.

43035502421025 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

43035502421025 is the 6560145-th square number.

43035502421025 is the 3280073-rd centered octagonal number.

It is an amenable number.

43035502421025 is a deficient number, since it is larger than the sum of its proper divisors (37828584915546).

43035502421025 is an frugal number, since it uses more digits than its factorization.

43035502421025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4162 (or 2078 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 43035502421025 its reverse (52012420553034), we get a palindrome (95047922974059).

The spelling of 43035502421025 in words is "forty-three trillion, thirty-five billion, five hundred two million, four hundred twenty-one thousand, twenty-five".