1425647873 has 4 divisors (see below), whose sum is σ = 1535313108. Its totient is φ = 1315982640.

The previous prime is 1425647869. The next prime is 1425647887. The reversal of 1425647873 is 3787465241.

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

It can be written as a sum of positive squares in 2 ways, for example, as 937768129 + 487879744 = 30623^2 + 22088^2 .

It is a cyclic number.

It is not a de Polignac number, because 1425647873 - 2² = 1425647869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1425647173) 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, 54832598 + ... + 54832623.

It is an arithmetic number, because the mean of its divisors is an integer number (383828277).

Almost surely, 2^1425647873 is an apocalyptic number.

1425647873 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1425647873 is a deficient number, since it is larger than the sum of its proper divisors (109665235).

1425647873 is a wasteful number, since it uses less digits than its factorization.

1425647873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109665234.

The product of its digits is 1128960, while the sum is 47.

The square root of 1425647873 is about 37757.7524887274. The cubic root of 1425647873 is about 1125.4790711563.

The spelling of 1425647873 in words is "one billion, four hundred twenty-five million, six hundred forty-seven thousand, eight hundred seventy-three".