13725278961 has 8 divisors (see below), whose sum is σ = 18301226304. Its totient is φ = 9149758800.

The previous prime is 13725278939. The next prime is 13725278989. The reversal of 13725278961 is 16987252731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13725278961 - 2³³ = 5135344369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13725278921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22266 + ... + 167171.

It is an arithmetic number, because the mean of its divisors is an integer number (2287653288).

Almost surely, 2^13725278961 is an apocalyptic number.

It is an amenable number.

13725278961 is a deficient number, since it is larger than the sum of its proper divisors (4575947343).

13725278961 is a wasteful number, since it uses less digits than its factorization.

13725278961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213591.

The product of its digits is 1270080, while the sum is 51.

The spelling of 13725278961 in words is "thirteen billion, seven hundred twenty-five million, two hundred seventy-eight thousand, nine hundred sixty-one".