1031642225 has 6 divisors (see below), whose sum is σ = 1279236390. Its totient is φ = 825313760.

The previous prime is 1031642189. The next prime is 1031642231. The reversal of 1031642225 is 5222461301.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 280663009 + 750979216 = 16753^2 + 27404^2 .

It is not a de Polignac number, because 1031642225 - 2¹² = 1031638129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1031642194 and 1031642203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20632820 + ... + 20632869.

It is an arithmetic number, because the mean of its divisors is an integer number (213206065).

Almost surely, 2^1031642225 is an apocalyptic number.

It is an amenable number.

1031642225 is a deficient number, since it is larger than the sum of its proper divisors (247594165).

1031642225 is an equidigital number, since it uses as much as digits as its factorization.

1031642225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41265699 (or 41265694 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1031642225 is about 32119.1878010637. The cubic root of 1031642225 is about 1010.4380758185.

The spelling of 1031642225 in words is "one billion, thirty-one million, six hundred forty-two thousand, two hundred twenty-five".