1425001642 has 32 divisors (see below), whose sum is σ = 2291287824. Its totient is φ = 662323200.

The previous prime is 1425001631. The next prime is 1425001703. The reversal of 1425001642 is 2461005241.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 7403841 + 1417597801 = 2721^2 + 37651^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1617042 + ... + 1617922.

Almost surely, 2^1425001642 is an apocalyptic number.

1425001642 is a deficient number, since it is larger than the sum of its proper divisors (866286182).

1425001642 is a wasteful number, since it uses less digits than its factorization.

1425001642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1425001642 is about 37749.1939251688. The cubic root of 1425001642 is about 1125.3089895622.

Adding to 1425001642 its reverse (2461005241), we get a palindrome (3886006883).

The spelling of 1425001642 in words is "one billion, four hundred twenty-five million, one thousand, six hundred forty-two".