1325505231 has 6 divisors (see below), whose sum is σ = 1914618680. Its totient is φ = 883670148.

The previous prime is 1325505221. The next prime is 1325505263. The reversal of 1325505231 is 1325055231.

It is a happy number.

1325505231 is a `hidden beast` number, since 1 + 32 + 550 + 52 + 31 = 666.

It is not a de Polignac number, because 1325505231 - 2¹¹ = 1325503183 is a prime.

It is a super-2 number, since 2×1325505231² = 3513928234816726722, 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 = 1325505195 and 1325505204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325505221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73639171 + ... + 73639188.

Almost surely, 2^1325505231 is an apocalyptic number.

1325505231 is a deficient number, since it is larger than the sum of its proper divisors (589113449).

1325505231 is a wasteful number, since it uses less digits than its factorization.

1325505231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147278365 (or 147278362 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 1325505231 is about 36407.4886664818. The cubic root of 1325505231 is about 1098.4842017235.

The spelling of 1325505231 in words is "one billion, three hundred twenty-five million, five hundred five thousand, two hundred thirty-one".