1425544231 has 12 divisors (see below), whose sum is σ = 1523451888. Its totient is φ = 1333609472.

The previous prime is 1425544229. The next prime is 1425544243. The reversal of 1425544231 is 1324455241.

It is not a de Polignac number, because 1425544231 - 2¹ = 1425544229 is a prime.

It is a super-2 number, since 2×1425544231² = 4064352709074762722, 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 = 1425544193 and 1425544202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425544291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33495 + ... + 63031.

It is an arithmetic number, because the mean of its divisors is an integer number (126954324).

Almost surely, 2^1425544231 is an apocalyptic number.

1425544231 is a deficient number, since it is larger than the sum of its proper divisors (97907657).

1425544231 is a wasteful number, since it uses less digits than its factorization.

1425544231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29738 (or 29721 counting only the distinct ones).

The product of its digits is 19200, while the sum is 31.

The square root of 1425544231 is about 37756.3800039146. The cubic root of 1425544231 is about 1125.4517970702.

Adding to 1425544231 its reverse (1324455241), we get a palindrome (2749999472).

The spelling of 1425544231 in words is "one billion, four hundred twenty-five million, five hundred forty-four thousand, two hundred thirty-one".