1421431025 has 24 divisors (see below), whose sum is σ = 2038661184. Its totient is φ = 962942400.

The previous prime is 1421430991. The next prime is 1421431069. The reversal of 1421431025 is 5201341241.

It is a de Polignac number, because none of the positive numbers 2^k-1421431025 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34406 + ... + 63455.

It is an arithmetic number, because the mean of its divisors is an integer number (84944216).

Almost surely, 2^1421431025 is an apocalyptic number.

It is an amenable number.

1421431025 is a deficient number, since it is larger than the sum of its proper divisors (617230159).

1421431025 is an equidigital number, since it uses as much as digits as its factorization.

1421431025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97961 (or 97956 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1421431025 is about 37701.8703116967. The cubic root of 1421431025 is about 1124.3683103921.

Adding to 1421431025 its reverse (5201341241), we get a palindrome (6622772266).

The spelling of 1421431025 in words is "one billion, four hundred twenty-one million, four hundred thirty-one thousand, twenty-five".