321473725 has 6 divisors (see below), whose sum is σ = 398627450. Its totient is φ = 257178960.

The previous prime is 321473707. The next prime is 321473741. The reversal of 321473725 is 527374123.

It can be written as a sum of positive squares in 3 ways, for example, as 108722329 + 212751396 = 10427^2 + 14586^2 .

It is not a de Polignac number, because 321473725 - 2¹⁵ = 321440957 is a prime.

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, 6429450 + ... + 6429499.

Almost surely, 2^321473725 is an apocalyptic number.

It is an amenable number.

321473725 is a deficient number, since it is larger than the sum of its proper divisors (77153725).

321473725 is a wasteful number, since it uses less digits than its factorization.

321473725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12858959 (or 12858954 counting only the distinct ones).

The product of its digits is 35280, while the sum is 34.

The square root of 321473725 is about 17929.6883687364. The cubic root of 321473725 is about 685.0387851661.

The spelling of 321473725 in words is "three hundred twenty-one million, four hundred seventy-three thousand, seven hundred twenty-five".