321125525 has 12 divisors (see below), whose sum is σ = 455080992. Its totient is φ = 220200240.

The previous prime is 321125521. The next prime is 321125537. The reversal of 321125525 is 525521123.

It is not a de Polignac number, because 321125525 - 2² = 321125521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321125494 and 321125503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321125521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 917327 + ... + 917676.

It is an arithmetic number, because the mean of its divisors is an integer number (37923416).

Almost surely, 2^321125525 is an apocalyptic number.

321125525 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

321125525 is a deficient number, since it is larger than the sum of its proper divisors (133955467).

321125525 is a wasteful number, since it uses less digits than its factorization.

321125525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835020 (or 1835015 counting only the distinct ones).

The product of its digits is 3000, while the sum is 26.

The square root of 321125525 is about 17919.9755859209. The cubic root of 321125525 is about 684.7913655911.

Adding to 321125525 its reverse (525521123), we get a palindrome (846646648).

The spelling of 321125525 in words is "three hundred twenty-one million, one hundred twenty-five thousand, five hundred twenty-five".