1140025531 has 4 divisors (see below), whose sum is σ = 1140426864. Its totient is φ = 1139624200.

The previous prime is 1140025507. The next prime is 1140025571. The reversal of 1140025531 is 1355200411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1355200411 = 23 ⋅58921757.

It is a cyclic number.

It is not a de Polignac number, because 1140025531 - 2⁵ = 1140025499 is a prime.

It is a super-2 number, since 2×1140025531² = 2599316422663663922, which contains 22 as substring.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 196375 + ... + 202096.

It is an arithmetic number, because the mean of its divisors is an integer number (285106716).

Almost surely, 2^1140025531 is an apocalyptic number.

1140025531 is a deficient number, since it is larger than the sum of its proper divisors (401333).

1140025531 is an equidigital number, since it uses as much as digits as its factorization.

1140025531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401332.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1140025531 is about 33764.2641116314. The cubic root of 1140025531 is about 1044.6517252448.

Adding to 1140025531 its reverse (1355200411), we get a palindrome (2495225942).

The spelling of 1140025531 in words is "one billion, one hundred forty million, twenty-five thousand, five hundred thirty-one".