1000525900 has 72 divisors (see below), whose sum is σ = 2393190576. Its totient is φ = 360038400.

The previous prime is 1000525853. The next prime is 1000525913. The reversal of 1000525900 is 95250001.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102012 + ... + 111388.

It is an arithmetic number, because the mean of its divisors is an integer number (33238758).

Almost surely, 2^1000525900 is an apocalyptic number.

1000525900 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 1000525900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1196595288).

1000525900 is an abundant number, since it is smaller than the sum of its proper divisors (1392664676).

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

1000525900 is a wasteful number, since it uses less digits than its factorization.

1000525900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9499 (or 9492 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 1000525900 is about 31631.0907178365. The cubic root of 1000525900 is about 1000.1752692789.

Adding to 1000525900 its reverse (95250001), we get a palindrome (1095775901).

The spelling of 1000525900 in words is "one billion, five hundred twenty-five thousand, nine hundred".