1321460725 has 12 divisors (see below), whose sum is σ = 1764658756. Its totient is φ = 975847680.

The previous prime is 1321460683. The next prime is 1321460761. The reversal of 1321460725 is 5270641231.

It can be written as a sum of positive squares in 6 ways, for example, as 13264164 + 1308196561 = 3642^2 + 36169^2 .

It is not a de Polignac number, because 1321460725 - 2¹⁵ = 1321427957 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2032692 + ... + 2033341.

Almost surely, 2^1321460725 is an apocalyptic number.

It is an amenable number.

1321460725 is a deficient number, since it is larger than the sum of its proper divisors (443198031).

1321460725 is a wasteful number, since it uses less digits than its factorization.

1321460725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4066056 (or 4066051 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 1321460725 is about 36351.9012570182. The cubic root of 1321460725 is about 1097.3657973833.

The spelling of 1321460725 in words is "one billion, three hundred twenty-one million, four hundred sixty thousand, seven hundred twenty-five".