1425543047 has 4 divisors (see below), whose sum is σ = 1435110600. Its totient is φ = 1415975496.

The previous prime is 1425543043. The next prime is 1425543083. The reversal of 1425543047 is 7403455241.

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

It is a cyclic number.

It is not a de Polignac number, because 1425543047 - 2² = 1425543043 is a prime.

It is a super-3 number, since 3×1425543047³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1425542998 and 1425543016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425543043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4783553 + ... + 4783850.

It is an arithmetic number, because the mean of its divisors is an integer number (358777650).

Almost surely, 2^1425543047 is an apocalyptic number.

1425543047 is a deficient number, since it is larger than the sum of its proper divisors (9567553).

1425543047 is an equidigital number, since it uses as much as digits as its factorization.

1425543047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9567552.

The product of its (nonzero) digits is 67200, while the sum is 35.

The square root of 1425543047 is about 37756.3643244420. The cubic root of 1425543047 is about 1125.4514854850.

Adding to 1425543047 its reverse (7403455241), we get a palindrome (8828998288).

The spelling of 1425543047 in words is "one billion, four hundred twenty-five million, five hundred forty-three thousand, forty-seven".