1025021120 has 224 divisors, whose sum is σ = 2791480320. Its totient is φ = 356106240.

The previous prime is 1025021119. The next prime is 1025021183. The reversal of 1025021120 is 211205201.

It is a junction number, because it is equal to n+sod(n) for n = 1025021095 and 1025021104.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4857815 + ... + 4858025.

Almost surely, 2^1025021120 is an apocalyptic number.

1025021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1025021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1395740160).

1025021120 is an abundant number, since it is smaller than the sum of its proper divisors (1766459200).

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

1025021120 is a wasteful number, since it uses less digits than its factorization.

1025021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 1025021120 is about 32015.9510244503. The cubic root of 1025021120 is about 1008.2717626195.

Adding to 1025021120 its reverse (211205201), we get a palindrome (1236226321).

The spelling of 1025021120 in words is "one billion, twenty-five million, twenty-one thousand, one hundred twenty".