1025063646 has 16 divisors (see below), whose sum is σ = 2054308608. Its totient is φ = 340991000.

The previous prime is 1025063629. The next prime is 1025063647. The reversal of 1025063646 is 6463605201.

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, 171030 + ... + 176921.

It is an arithmetic number, because the mean of its divisors is an integer number (128394288).

Almost surely, 2^1025063646 is an apocalyptic number.

1025063646 is an abundant number, since it is smaller than the sum of its proper divisors (1029244962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1025063646 is a wasteful number, since it uses less digits than its factorization.

1025063646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348447.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 1025063646 is about 32016.6151552596. The cubic root of 1025063646 is about 1008.2857061280.

Adding to 1025063646 its reverse (6463605201), we get a palindrome (7488668847).

The spelling of 1025063646 in words is "one billion, twenty-five million, sixty-three thousand, six hundred forty-six".