1255925691478 has 16 divisors (see below), whose sum is σ = 1887055225776. Its totient is φ = 626907571360.

The previous prime is 1255925691457. The next prime is 1255925691479. The reversal of 1255925691478 is 8741965295521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255925691479) 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, 9129888 + ... + 9266428.

It is an arithmetic number, because the mean of its divisors is an integer number (117940951611).

Almost surely, 2^{1255925691478} is an apocalyptic number.

1255925691478 is a deficient number, since it is larger than the sum of its proper divisors (631129534298).

1255925691478 is a wasteful number, since it uses less digits than its factorization.

1255925691478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144239.

The product of its digits is 54432000, while the sum is 64.

The spelling of 1255925691478 in words is "one trillion, two hundred fifty-five billion, nine hundred twenty-five million, six hundred ninety-one thousand, four hundred seventy-eight".