1020525650 has 12 divisors (see below), whose sum is σ = 1898177802. Its totient is φ = 408210240.

The previous prime is 1020525647. The next prime is 1020525659. The reversal of 1020525650 is 565250201.

It can be written as a sum of positive squares in 3 ways, for example, as 479916649 + 540609001 = 21907^2 + 23251^2 .

It is not an unprimeable number, because it can be changed into a prime (1020525659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10205207 + ... + 10205306.

Almost surely, 2^1020525650 is an apocalyptic number.

1020525650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020525650 is a deficient number, since it is larger than the sum of its proper divisors (877652152).

1020525650 is a wasteful number, since it uses less digits than its factorization.

1020525650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20410525 (or 20410520 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1020525650 is about 31945.6671553436. The cubic root of 1020525650 is about 1006.7955985662.

Adding to 1020525650 its reverse (565250201), we get a palindrome (1585775851).

The spelling of 1020525650 in words is "one billion, twenty million, five hundred twenty-five thousand, six hundred fifty".