1443385425 has 24 divisors (see below), whose sum is σ = 2526775776. Its totient is φ = 724522240.

The previous prime is 1443385421. The next prime is 1443385439. The reversal of 1443385425 is 5245833441.

It is not a de Polignac number, because 1443385425 - 2² = 1443385421 is a prime.

It is a super-2 number, since 2×1443385425² = 4166722970204861250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1443385421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 564759 + ... + 567308.

It is an arithmetic number, because the mean of its divisors is an integer number (105282324).

Almost surely, 2^1443385425 is an apocalyptic number.

1443385425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1443385425 is a deficient number, since it is larger than the sum of its proper divisors (1083390351).

1443385425 is a wasteful number, since it uses less digits than its factorization.

1443385425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132097 (or 1132092 counting only the distinct ones).

The product of its digits is 230400, while the sum is 39.

The square root of 1443385425 is about 37991.9126262419. The cubic root of 1443385425 is about 1130.1274884223.

The spelling of 1443385425 in words is "one billion, four hundred forty-three million, three hundred eighty-five thousand, four hundred twenty-five".