1425971443 has 4 divisors (see below), whose sum is σ = 1535661568. Its totient is φ = 1316281320.

The previous prime is 1425971401. The next prime is 1425971483. The reversal of 1425971443 is 3441795241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1425971443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1425971396 and 1425971405.

It is not an unprimeable number, because it can be changed into a prime (1425971483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54845043 + ... + 54845068.

It is an arithmetic number, because the mean of its divisors is an integer number (383915392).

Almost surely, 2^1425971443 is an apocalyptic number.

1425971443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1425971443 is a deficient number, since it is larger than the sum of its proper divisors (109690125).

1425971443 is a wasteful number, since it uses less digits than its factorization.

1425971443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109690124.

The product of its digits is 120960, while the sum is 40.

The square root of 1425971443 is about 37762.0370610485. The cubic root of 1425971443 is about 1125.5642122635.

The spelling of 1425971443 in words is "one billion, four hundred twenty-five million, nine hundred seventy-one thousand, four hundred forty-three".