1420340425 has 12 divisors (see below), whose sum is σ = 2012825536. Its totient is φ = 973947600.

The previous prime is 1420340419. The next prime is 1420340443. The reversal of 1420340425 is 5240430241.

It is a happy number.

It is not a de Polignac number, because 1420340425 - 2⁵ = 1420340393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1420340425.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4057941 + ... + 4058290.

Almost surely, 2^1420340425 is an apocalyptic number.

It is an amenable number.

1420340425 is a deficient number, since it is larger than the sum of its proper divisors (592485111).

1420340425 is an equidigital number, since it uses as much as digits as its factorization.

1420340425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8116248 (or 8116243 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 1420340425 is about 37687.4040628961. The cubic root of 1420340425 is about 1124.0806777638.

Adding to 1420340425 its reverse (5240430241), we get a palindrome (6660770666).

The spelling of 1420340425 in words is "one billion, four hundred twenty million, three hundred forty thousand, four hundred twenty-five".