12340479725 has 30 divisors (see below), whose sum is σ = 17851585290. Its totient is φ = 8462002080.

The previous prime is 12340479709. The next prime is 12340479737. The reversal of 12340479725 is 52797404321.

It can be written as a sum of positive squares in 3 ways, for example, as 992691049 + 11347788676 = 31507^2 + 106526^2 .

It is not a de Polignac number, because 12340479725 - 2⁴ = 12340479709 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 42770 + ... + 162819.

It is an arithmetic number, because the mean of its divisors is an integer number (595052843).

Almost surely, 2^12340479725 is an apocalyptic number.

It is an amenable number.

12340479725 is a deficient number, since it is larger than the sum of its proper divisors (5511105565).

12340479725 is an frugal number, since it uses more digits than its factorization.

12340479725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205627 (or 205601 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 12340479725 in words is "twelve billion, three hundred forty million, four hundred seventy-nine thousand, seven hundred twenty-five".