2605432531 has 8 divisors (see below), whose sum is σ = 2821528080. Its totient is φ = 2391576672.

The previous prime is 2605432523. The next prime is 2605432567. The reversal of 2605432531 is 1352345062.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2605432531 - 2³ = 2605432523 is a prime.

It is a super-2 number, since 2×2605432531² = 13576557347186131922, 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 = 2605432493 and 2605432502.

It is not an unprimeable number, because it can be changed into a prime (2605432591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 557500 + ... + 562153.

It is an arithmetic number, because the mean of its divisors is an integer number (352691010).

Almost surely, 2^2605432531 is an apocalyptic number.

2605432531 is a deficient number, since it is larger than the sum of its proper divisors (216095549).

2605432531 is a wasteful number, since it uses less digits than its factorization.

2605432531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119845.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 2605432531 is about 51043.4376879144. The cubic root of 2605432531 is about 1376.0259064988.

Adding to 2605432531 its reverse (1352345062), we get a palindrome (3957777593).

It can be divided in two parts, 26054 and 32531, that added together give a palindrome (58585).

The spelling of 2605432531 in words is "two billion, six hundred five million, four hundred thirty-two thousand, five hundred thirty-one".