172531325 has 6 divisors (see below), whose sum is σ = 213938874. Its totient is φ = 138025040.

The previous prime is 172531301. The next prime is 172531357. The reversal of 172531325 is 523135271.

It can be written as a sum of positive squares in 3 ways, for example, as 22174681 + 150356644 = 4709^2 + 12262^2 .

It is not a de Polignac number, because 172531325 - 2⁸ = 172531069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3450602 + ... + 3450651.

It is an arithmetic number, because the mean of its divisors is an integer number (35656479).

Almost surely, 2^172531325 is an apocalyptic number.

It is an amenable number.

172531325 is a deficient number, since it is larger than the sum of its proper divisors (41407549).

172531325 is an equidigital number, since it uses as much as digits as its factorization.

172531325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6901263 (or 6901258 counting only the distinct ones).

The product of its digits is 6300, while the sum is 29.

The square root of 172531325 is about 13135.1180047992. The cubic root of 172531325 is about 556.7018346235.

Adding to 172531325 its reverse (523135271), we get a palindrome (695666596).

The spelling of 172531325 in words is "one hundred seventy-two million, five hundred thirty-one thousand, three hundred twenty-five".