1140025521 has 16 divisors (see below), whose sum is σ = 1586903040. Its totient is φ = 726615120.

The previous prime is 1140025507. The next prime is 1140025571. The reversal of 1140025521 is 1255200411.

It is not a de Polignac number, because 1140025521 - 2⁹ = 1140025009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1140025571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275256 + ... + 279366.

It is an arithmetic number, because the mean of its divisors is an integer number (99181440).

Almost surely, 2^1140025521 is an apocalyptic number.

It is an amenable number.

1140025521 is a deficient number, since it is larger than the sum of its proper divisors (446877519).

1140025521 is a wasteful number, since it uses less digits than its factorization.

1140025521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8156.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1140025521 is about 33764.2639635458. The cubic root of 1140025521 is about 1044.6517221904.

Adding to 1140025521 its reverse (1255200411), we get a palindrome (2395225932).

The spelling of 1140025521 in words is "one billion, one hundred forty million, twenty-five thousand, five hundred twenty-one".