1025431135 has 16 divisors (see below), whose sum is σ = 1276825536. Its totient is φ = 789931008.

The previous prime is 1025431087. The next prime is 1025431193. The reversal of 1025431135 is 5311345201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1025431135 - 2¹⁷ = 1025300063 is a prime.

It is a Duffinian number.

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, 10627 + ... + 46516.

It is an arithmetic number, because the mean of its divisors is an integer number (79801596).

Almost surely, 2^1025431135 is an apocalyptic number.

1025431135 is a deficient number, since it is larger than the sum of its proper divisors (251394401).

1025431135 is an equidigital number, since it uses as much as digits as its factorization.

1025431135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57282.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1025431135 is about 32022.3536767677. The cubic root of 1025431135 is about 1008.4061830814.

Adding to 1025431135 its reverse (5311345201), we get a palindrome (6336776336).

The spelling of 1025431135 in words is "one billion, twenty-five million, four hundred thirty-one thousand, one hundred thirty-five".