1025063645 has 8 divisors (see below), whose sum is σ = 1242255960. Its totient is φ = 811931200.

The previous prime is 1025063629. The next prime is 1025063647. The reversal of 1025063645 is 5463605201.

It can be written as a sum of positive squares in 4 ways, for example, as 686282809 + 338780836 = 26197^2 + 18406^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1025063645 - 2⁴ = 1025063629 is a prime.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1014410 + ... + 1015419.

It is an arithmetic number, because the mean of its divisors is an integer number (155281995).

Almost surely, 2^1025063645 is an apocalyptic number.

It is an amenable number.

1025063645 is a deficient number, since it is larger than the sum of its proper divisors (217192315).

1025063645 is a wasteful number, since it uses less digits than its factorization.

1025063645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2029935.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 1025063645 is about 32016.6151396427. The cubic root of 1025063645 is about 1008.2857058001.

Adding to 1025063645 its reverse (5463605201), we get a palindrome (6488668846).

The spelling of 1025063645 in words is "one billion, twenty-five million, sixty-three thousand, six hundred forty-five".