1025810500 has 96 divisors (see below), whose sum is σ = 2632226688. Its totient is φ = 344304000.

The previous prime is 1025810483. The next prime is 1025810509. The reversal of 1025810500 is 50185201.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1025810509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64327 + ... + 78673.

It is an arithmetic number, because the mean of its divisors is an integer number (27419028).

Almost surely, 2^1025810500 is an apocalyptic number.

1025810500 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 1025810500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1316113344).

1025810500 is an abundant number, since it is smaller than the sum of its proper divisors (1606416188).

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

1025810500 is a wasteful number, since it uses less digits than its factorization.

1025810500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14390 (or 14378 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 1025810500 is about 32028.2765693067. The cubic root of 1025810500 is about 1008.5305232515.

Adding to 1025810500 its reverse (50185201), we get a palindrome (1075995701).

The spelling of 1025810500 in words is "one billion, twenty-five million, eight hundred ten thousand, five hundred".