325261531 has 4 divisors (see below), whose sum is σ = 371727472. Its totient is φ = 278795592.

The previous prime is 325261523. The next prime is 325261633. The reversal of 325261531 is 135162523.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135162523 = 19 ⋅7113817.

It is a cyclic number.

It is not a de Polignac number, because 325261531 - 2³ = 325261523 is a prime.

It is a super-2 number, since 2×325261531² = 211590127096927922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 325261531.

It is not an unprimeable number, because it can be changed into a prime (325261231) 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, 23232960 + ... + 23232973.

It is an arithmetic number, because the mean of its divisors is an integer number (92931868).

Almost surely, 2^325261531 is an apocalyptic number.

325261531 is a deficient number, since it is larger than the sum of its proper divisors (46465941).

325261531 is an equidigital number, since it uses as much as digits as its factorization.

325261531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46465940.

The product of its digits is 5400, while the sum is 28.

The square root of 325261531 is about 18035.0084835023. The cubic root of 325261531 is about 687.7188062113.

The spelling of 325261531 in words is "three hundred twenty-five million, two hundred sixty-one thousand, five hundred thirty-one".