1259725971279 has 8 divisors (see below), whose sum is σ = 1686604067632. Its totient is φ = 836332594560.

The previous prime is 1259725971247. The next prime is 1259725971307. The reversal of 1259725971279 is 9721795279521.

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

It is not a de Polignac number, because 1259725971279 - 2⁵ = 1259725971247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1259725971209) 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, 871179064 + ... + 871180509.

It is an arithmetic number, because the mean of its divisors is an integer number (210825508454).

Almost surely, 2^{1259725971279} is an apocalyptic number.

1259725971279 is a deficient number, since it is larger than the sum of its proper divisors (426878096353).

1259725971279 is a wasteful number, since it uses less digits than its factorization.

1259725971279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742359817.

The product of its digits is 50009400, while the sum is 66.

The spelling of 1259725971279 in words is "one trillion, two hundred fifty-nine billion, seven hundred twenty-five million, nine hundred seventy-one thousand, two hundred seventy-nine".