1025523220 has 24 divisors (see below), whose sum is σ = 2165637600. Its totient is φ = 407916192.

The previous prime is 1025523209. The next prime is 1025523229. The reversal of 1025523220 is 223255201.

It is a junction number, because it is equal to n+sod(n) for n = 1025523191 and 1025523200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025523229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139650 + ... + 146809.

It is an arithmetic number, because the mean of its divisors is an integer number (90234900).

Almost surely, 2^1025523220 is an apocalyptic number.

1025523220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1025523220 is an abundant number, since it is smaller than the sum of its proper divisors (1140114380).

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

1025523220 is a wasteful number, since it uses less digits than its factorization.

1025523220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286647 (or 286645 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 1025523220 is about 32023.7914682194. The cubic root of 1025523220 is about 1008.4363675572.

Adding to 1025523220 its reverse (223255201), we get a palindrome (1248778421).

The spelling of 1025523220 in words is "one billion, twenty-five million, five hundred twenty-three thousand, two hundred twenty".