43720719025 has 81 divisors (see below), whose sum is σ = 59966915499. Its totient is φ = 31615164000.

The previous prime is 43720719019. The next prime is 43720719047. The reversal of 43720719025 is 52091702734.

The square root of 43720719025 is 209095.

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., 15739458849 + 27981260176 = 125457^2 + 167276^2 .

It is not a de Polignac number, because 43720719025 - 2⁹ = 43720718513 is a prime.

It is a super-3 number, since 3×43720719025³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 615784740 + ... + 615784810.

Almost surely, 2^43720719025 is an apocalyptic number.

43720719025 is the 209095-th square number.

43720719025 is the 104548-th centered octagonal number.

It is an amenable number.

43720719025 is a deficient number, since it is larger than the sum of its proper divisors (16246196474).

43720719025 is an equidigital number, since it uses as much as digits as its factorization.

43720719025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 43720719025 in words is "forty-three billion, seven hundred twenty million, seven hundred nineteen thousand, twenty-five".