1255923558 has 12 divisors (see below), whose sum is σ = 2721167748. Its totient is φ = 418641180.

The previous prime is 1255923551. The next prime is 1255923583. The reversal of 1255923558 is 8553295521.

It is a happy number.

1255923558 is a `hidden beast` number, since 1 + 2 + 5 + 5 + 92 + 3 + 558 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255923551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34886748 + ... + 34886783.

It is an arithmetic number, because the mean of its divisors is an integer number (226763979).

Almost surely, 2^1255923558 is an apocalyptic number.

1255923558 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1255923558 is an abundant number, since it is smaller than the sum of its proper divisors (1465244190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1255923558 is a wasteful number, since it uses less digits than its factorization.

1255923558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69773539 (or 69773536 counting only the distinct ones).

The product of its digits is 540000, while the sum is 45.

The square root of 1255923558 is about 35439.0118090220. The cubic root of 1255923558 is about 1078.9162533925.

The spelling of 1255923558 in words is "one billion, two hundred fifty-five million, nine hundred twenty-three thousand, five hundred fifty-eight".