8013525431 has 4 divisors (see below), whose sum is σ = 8021239200. Its totient is φ = 8005811664.

The previous prime is 8013525413. The next prime is 8013525461. The reversal of 8013525431 is 1345253108.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8013525431 - 2¹⁴ = 8013509047 is a prime.

It is a super-2 number, since 2×8013525431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8013525461) 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, 3855326 + ... + 3857403.

It is an arithmetic number, because the mean of its divisors is an integer number (2005309800).

Almost surely, 2^8013525431 is an apocalyptic number.

8013525431 is a deficient number, since it is larger than the sum of its proper divisors (7713769).

8013525431 is a wasteful number, since it uses less digits than its factorization.

8013525431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7713768.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 8013525431 is about 89518.2966270025. The cubic root of 8013525431 is about 2001.1264846470.

Adding to 8013525431 its reverse (1345253108), we get a palindrome (9358778539).

The spelling of 8013525431 in words is "eight billion, thirteen million, five hundred twenty-five thousand, four hundred thirty-one".