1425138931 has 2 divisors, whose sum is σ = 1425138932. Its totient is φ = 1425138930.

The previous prime is 1425138929. The next prime is 1425138941. The reversal of 1425138931 is 1398315241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1425138931 - 2¹ = 1425138929 is a prime.

It is a super-2 number, since 2×1425138931² = 4062041945303645522, which contains 22 as substring.

Together with 1425138929, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1425138901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 712569465 + 712569466.

It is an arithmetic number, because the mean of its divisors is an integer number (712569466).

Almost surely, 2^1425138931 is an apocalyptic number.

1425138931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1425138931 is an equidigital number, since it uses as much as digits as its factorization.

1425138931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 37.

The square root of 1425138931 is about 37751.0123175525. The cubic root of 1425138931 is about 1125.3451269673.

The spelling of 1425138931 in words is "one billion, four hundred twenty-five million, one hundred thirty-eight thousand, nine hundred thirty-one".