1425973831 has 4 divisors (see below), whose sum is σ = 1426583752. Its totient is φ = 1425363912.

The previous prime is 1425973763. The next prime is 1425973847. The reversal of 1425973831 is 1383795241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1383795241 = 3299 ⋅419459.

It is a cyclic number.

It is not a de Polignac number, because 1425973831 - 2²¹ = 1423876679 is a prime.

It is a super-2 number, since 2×1425973831² = 4066802733393633122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425977831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301440 + ... + 306133.

It is an arithmetic number, because the mean of its divisors is an integer number (356645938).

Almost surely, 2^1425973831 is an apocalyptic number.

1425973831 is a deficient number, since it is larger than the sum of its proper divisors (609921).

1425973831 is an equidigital number, since it uses as much as digits as its factorization.

1425973831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609920.

The product of its digits is 181440, while the sum is 43.

The square root of 1425973831 is about 37762.0686800922. The cubic root of 1425973831 is about 1125.5648405711.

The spelling of 1425973831 in words is "one billion, four hundred twenty-five million, nine hundred seventy-three thousand, eight hundred thirty-one".