4143625641 has 27 divisors (see below), whose sum is σ = 6139970109. Its totient is φ = 2692767672.

The previous prime is 4143625639. The next prime is 4143625657. The reversal of 4143625641 is 1465263414.

The square root of 4143625641 is 64371.

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

4143625641 is a `hidden beast` number, since 4 + 1 + 4 + 3 + 6 + 2 + 5 + 641 = 666.

It is not a de Polignac number, because 4143625641 - 2¹ = 4143625639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4143625596 and 4143625605.

It is not an unprimeable number, because it can be changed into a prime (4143625601) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 8303610 + ... + 8304108.

Almost surely, 2^4143625641 is an apocalyptic number.

4143625641 is the 64371-st square number.

4143625641 is the 32186-th centered octagonal number.

It is an amenable number.

4143625641 is a deficient number, since it is larger than the sum of its proper divisors (1996344468).

4143625641 is an frugal number, since it uses more digits than its factorization.

4143625641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090 (or 545 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The cubic root of 4143625641 is about 1606.1773746711.

Multiplying 4143625641 by its sum of digits (36), we get a square (149170523076 = 386226²).

The spelling of 4143625641 in words is "four billion, one hundred forty-three million, six hundred twenty-five thousand, six hundred forty-one".