1259225791478 has 4 divisors (see below), whose sum is σ = 1888838687220. Its totient is φ = 629612895738.

The previous prime is 1259225791469. The next prime is 1259225791501. The reversal of 1259225791478 is 8741975229521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1259225791478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314806447868 + ... + 314806447871.

It is an arithmetic number, because the mean of its divisors is an integer number (472209671805).

Almost surely, 2^{1259225791478} is an apocalyptic number.

1259225791478 is a deficient number, since it is larger than the sum of its proper divisors (629612895742).

1259225791478 is an equidigital number, since it uses as much as digits as its factorization.

1259225791478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629612895741.

The product of its digits is 25401600, while the sum is 62.

The spelling of 1259225791478 in words is "one trillion, two hundred fifty-nine billion, two hundred twenty-five million, seven hundred ninety-one thousand, four hundred seventy-eight".