321253530425 has 12 divisors (see below), whose sum is σ = 398364242640. Its totient is φ = 256996459920.

The previous prime is 321253530421. The next prime is 321253530509. The reversal of 321253530425 is 524035352123.

It is not a de Polignac number, because 321253530425 - 2² = 321253530421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321253530421) 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, 1051094 + ... + 1321856.

It is an arithmetic number, because the mean of its divisors is an integer number (33197020220).

Almost surely, 2^321253530425 is an apocalyptic number.

It is an amenable number.

321253530425 is a deficient number, since it is larger than the sum of its proper divisors (77110712215).

321253530425 is a wasteful number, since it uses less digits than its factorization.

321253530425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318232 (or 318227 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 35.

Adding to 321253530425 its reverse (524035352123), we get a palindrome (845288882548).

The spelling of 321253530425 in words is "three hundred twenty-one billion, two hundred fifty-three million, five hundred thirty thousand, four hundred twenty-five".