1025063644 has 12 divisors (see below), whose sum is σ = 1956939768. Its totient is φ = 465938000.

The previous prime is 1025063629. The next prime is 1025063647. The reversal of 1025063644 is 4463605201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025063647) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11648407 + ... + 11648494.

It is an arithmetic number, because the mean of its divisors is an integer number (163078314).

Almost surely, 2^1025063644 is an apocalyptic number.

It is an amenable number.

1025063644 is a deficient number, since it is larger than the sum of its proper divisors (931876124).

1025063644 is a wasteful number, since it uses less digits than its factorization.

1025063644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23296916 (or 23296914 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 1025063644 is about 32016.6151240258. The cubic root of 1025063644 is about 1008.2857054722.

Adding to 1025063644 its reverse (4463605201), we get a palindrome (5488668845).

The spelling of 1025063644 in words is "one billion, twenty-five million, sixty-three thousand, six hundred forty-four".