1425678673 has 4 divisors (see below), whose sum is σ = 1425787120. Its totient is φ = 1425570228.

The previous prime is 1425678647. The next prime is 1425678677. The reversal of 1425678673 is 3768765241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1425678673 - 2¹³ = 1425670481 is a prime.

It is a super-3 number, since 3×1425678673³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1425678677) 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, 31263 + ... + 61876.

It is an arithmetic number, because the mean of its divisors is an integer number (356446780).

Almost surely, 2^1425678673 is an apocalyptic number.

It is an amenable number.

1425678673 is a deficient number, since it is larger than the sum of its proper divisors (108447).

1425678673 is an equidigital number, since it uses as much as digits as its factorization.

1425678673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108446.

The product of its digits is 1693440, while the sum is 49.

The square root of 1425678673 is about 37758.1603497840. The cubic root of 1425678673 is about 1125.4871761277.

It can be divided in two parts, 14256 and 78673, that added together give a palindrome (92929).

The spelling of 1425678673 in words is "one billion, four hundred twenty-five million, six hundred seventy-eight thousand, six hundred seventy-three".