1031221425 has 24 divisors (see below), whose sum is σ = 1836104704. Its totient is φ = 507677760.

The previous prime is 1031221393. The next prime is 1031221439. The reversal of 1031221425 is 5241221301.

It is not a de Polignac number, because 1031221425 - 2⁵ = 1031221393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 527857 + ... + 529806.

Almost surely, 2^1031221425 is an apocalyptic number.

1031221425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1031221425 is a deficient number, since it is larger than the sum of its proper divisors (804883279).

1031221425 is a wasteful number, since it uses less digits than its factorization.

1031221425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057689 (or 1057684 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1031221425 is about 32112.6365314342. The cubic root of 1031221425 is about 1010.3006734788.

Adding to 1031221425 its reverse (5241221301), we get a palindrome (6272442726).

The spelling of 1031221425 in words is "one billion, thirty-one million, two hundred twenty-one thousand, four hundred twenty-five".