1005521125 has 16 divisors (see below), whose sum is σ = 1434161664. Its totient is φ = 689499600.

The previous prime is 1005521113. The next prime is 1005521131. The reversal of 1005521125 is 5211255001.

It is a happy number.

It is not a de Polignac number, because 1005521125 - 2²¹ = 1003423973 is a prime.

It is a super-2 number, since 2×1005521125² = 2022145465642531250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1005521096 and 1005521105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 573709 + ... + 575458.

It is an arithmetic number, because the mean of its divisors is an integer number (89635104).

Almost surely, 2^1005521125 is an apocalyptic number.

It is an amenable number.

1005521125 is a deficient number, since it is larger than the sum of its proper divisors (428640539).

1005521125 is an equidigital number, since it uses as much as digits as its factorization.

1005521125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149189 (or 1149179 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 1005521125 is about 31709.9530904730. The cubic root of 1005521125 is about 1001.8369983706.

Adding to 1005521125 its reverse (5211255001), we get a palindrome (6216776126).

The spelling of 1005521125 in words is "one billion, five million, five hundred twenty-one thousand, one hundred twenty-five".