1425620431 has 16 divisors (see below), whose sum is σ = 1529349120. Its totient is φ = 1325903040.

The previous prime is 1425620411. The next prime is 1425620437. The reversal of 1425620431 is 1340265241.

It is a cyclic number.

It is not a de Polignac number, because 1425620431 - 2⁷ = 1425620303 is a prime.

It is a super-2 number, since 2×1425620431² = 4064787226569251522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1425620431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425620437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113230 + ... + 125188.

It is an arithmetic number, because the mean of its divisors is an integer number (95584320).

Almost surely, 2^1425620431 is an apocalyptic number.

1425620431 is a deficient number, since it is larger than the sum of its proper divisors (103728689).

1425620431 is a wasteful number, since it uses less digits than its factorization.

1425620431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12126.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1425620431 is about 37757.3890914083. The cubic root of 1425620431 is about 1125.4718497390.

Adding to 1425620431 its reverse (1340265241), we get a palindrome (2765885672).

The spelling of 1425620431 in words is "one billion, four hundred twenty-five million, six hundred twenty thousand, four hundred thirty-one".