1025632220 has 24 divisors (see below), whose sum is σ = 2206361808. Its totient is φ = 400246400.

The previous prime is 1025632213. The next prime is 1025632229. The reversal of 1025632220 is 222365201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025632229) 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, 624566 + ... + 626205.

It is an arithmetic number, because the mean of its divisors is an integer number (91931742).

Almost surely, 2^1025632220 is an apocalyptic number.

1025632220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1025632220 is an abundant number, since it is smaller than the sum of its proper divisors (1180729588).

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

1025632220 is a wasteful number, since it uses less digits than its factorization.

1025632220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250821 (or 1250819 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1025632220 is about 32025.4932826959. The cubic root of 1025632220 is about 1008.4720942535.

Adding to 1025632220 its reverse (222365201), we get a palindrome (1247997421).

The spelling of 1025632220 in words is "one billion, twenty-five million, six hundred thirty-two thousand, two hundred twenty".