1425423773 has 4 divisors (see below), whose sum is σ = 1427297628. Its totient is φ = 1423549920.

The previous prime is 1425423767. The next prime is 1425423787. The reversal of 1425423773 is 3773245241.

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 41434969 + 1383988804 = 6437^2 + 37202^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1425423773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425423763) 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, 935786 + ... + 937307.

It is an arithmetic number, because the mean of its divisors is an integer number (356824407).

Almost surely, 2^1425423773 is an apocalyptic number.

It is an amenable number.

1425423773 is a deficient number, since it is larger than the sum of its proper divisors (1873855).

1425423773 is an equidigital number, since it uses as much as digits as its factorization.

1425423773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873854.

The product of its digits is 141120, while the sum is 38.

The square root of 1425423773 is about 37754.7847696156. The cubic root of 1425423773 is about 1125.4200960799.

The spelling of 1425423773 in words is "one billion, four hundred twenty-five million, four hundred twenty-three thousand, seven hundred seventy-three".