1025000280 has 96 divisors (see below), whose sum is σ = 3339657360. Its totient is φ = 272643840.

The previous prime is 1025000269. The next prime is 1025000293. The reversal of 1025000280 is 820005201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 148179 + ... + 154941.

Almost surely, 2^1025000280 is an apocalyptic number.

1025000280 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 1025000280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1669828680).

1025000280 is an abundant number, since it is smaller than the sum of its proper divisors (2314657080).

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

1025000280 is a wasteful number, since it uses less digits than its factorization.

1025000280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7201 (or 7194 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1025000280 is about 32015.6255600293. The cubic root of 1025000280 is about 1008.2649294185.

Adding to 1025000280 its reverse (820005201), we get a palindrome (1845005481).

The spelling of 1025000280 in words is "one billion, twenty-five million, two hundred eighty", and thus it is an aban number.