531442215225 has 144 divisors (see below), whose sum is σ = 986748272640. Its totient is φ = 273262742400.

The previous prime is 531442215221. The next prime is 531442215229. The reversal of 531442215225 is 522512244135.

531442215225 is a `hidden beast` number, since 5 + 3 + 1 + 4 + 422 + 1 + 5 + 225 = 666.

It is an interprime number because it is at equal distance from previous prime (531442215221) and next prime (531442215229).

It is not a de Polignac number, because 531442215225 - 2² = 531442215221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 531442215225.

It is not an unprimeable number, because it can be changed into a prime (531442215221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 216120046 + ... + 216122504.

It is an arithmetic number, because the mean of its divisors is an integer number (6852418560).

Almost surely, 2^531442215225 is an apocalyptic number.

It is an amenable number.

531442215225 is a deficient number, since it is larger than the sum of its proper divisors (455306057415).

531442215225 is a wasteful number, since it uses less digits than its factorization.

531442215225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2820 (or 2812 counting only the distinct ones).

The product of its digits is 96000, while the sum is 36.

The spelling of 531442215225 in words is "five hundred thirty-one billion, four hundred forty-two million, two hundred fifteen thousand, two hundred twenty-five".