1257558681255 has 16 divisors (see below), whose sum is σ = 2031628784640. Its totient is φ = 664186331808.

The previous prime is 1257558681229. The next prime is 1257558681259. The reversal of 1257558681255 is 5521868557521.

It is not a de Polignac number, because 1257558681255 - 2¹⁵ = 1257558648487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257558681259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 406975375 + ... + 406978464.

It is an arithmetic number, because the mean of its divisors is an integer number (126976799040).

Almost surely, 2^{1257558681255} is an apocalyptic number.

1257558681255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1257558681255 is a deficient number, since it is larger than the sum of its proper divisors (774070103385).

1257558681255 is a wasteful number, since it uses less digits than its factorization.

1257558681255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813953950.

The product of its digits is 33600000, while the sum is 60.

The spelling of 1257558681255 in words is "one trillion, two hundred fifty-seven billion, five hundred fifty-eight million, six hundred eighty-one thousand, two hundred fifty-five".