1425133231 has 4 divisors (see below), whose sum is σ = 1425276000. Its totient is φ = 1424990464.

The previous prime is 1425133207. The next prime is 1425133243. The reversal of 1425133231 is 1323315241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1323315241 = 17 ⋅77842073.

It is a cyclic number.

It is not a de Polignac number, because 1425133231 - 2⁹ = 1425132719 is a prime.

It is a super-2 number, since 2×1425133231² = 4062009452200998722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1425133196 and 1425133205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425133261) 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, 55186 + ... + 76783.

It is an arithmetic number, because the mean of its divisors is an integer number (356319000).

Almost surely, 2^1425133231 is an apocalyptic number.

1425133231 is a deficient number, since it is larger than the sum of its proper divisors (142769).

1425133231 is a wasteful number, since it uses less digits than its factorization.

1425133231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142768.

The product of its digits is 2160, while the sum is 25.

The square root of 1425133231 is about 37750.9368228128. The cubic root of 1425133231 is about 1125.3436266514.

Adding to 1425133231 its reverse (1323315241), we get a palindrome (2748448472).

The spelling of 1425133231 in words is "one billion, four hundred twenty-five million, one hundred thirty-three thousand, two hundred thirty-one".