1001525500 has 24 divisors (see below), whose sum is σ = 2187332784. Its totient is φ = 400610000.

The previous prime is 1001525489. The next prime is 1001525507. The reversal of 1001525500 is 55251001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001525507) 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, 1001026 + ... + 1002025.

It is an arithmetic number, because the mean of its divisors is an integer number (91138866).

Almost surely, 2^1001525500 is an apocalyptic number.

1001525500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001525500 is an abundant number, since it is smaller than the sum of its proper divisors (1185807284).

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

1001525500 is a wasteful number, since it uses less digits than its factorization.

1001525500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003070 (or 2003058 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 1001525500 is about 31646.8876826774. The cubic root of 1001525500 is about 1000.5082416467.

Adding to 1001525500 its reverse (55251001), we get a palindrome (1056776501).

The spelling of 1001525500 in words is "one billion, one million, five hundred twenty-five thousand, five hundred".