1025501320 has 16 divisors (see below), whose sum is σ = 2307378060. Its totient is φ = 410200512.

The previous prime is 1025501237. The next prime is 1025501357. The reversal of 1025501320 is 231055201.

It can be written as a sum of positive squares in 2 ways, for example, as 936727236 + 88774084 = 30606^2 + 9422^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12818727 + ... + 12818806.

Almost surely, 2^1025501320 is an apocalyptic number.

1025501320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1025501320 is an abundant number, since it is smaller than the sum of its proper divisors (1281876740).

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

1025501320 is a wasteful number, since it uses less digits than its factorization.

1025501320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25637544 (or 25637540 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 1025501320 is about 32023.4495331156. The cubic root of 1025501320 is about 1008.4291891358.

Adding to 1025501320 its reverse (231055201), we get a palindrome (1256556521).

The spelling of 1025501320 in words is "one billion, twenty-five million, five hundred one thousand, three hundred twenty".