1255123408 has 40 divisors (see below), whose sum is σ = 3031859520. Its totient is φ = 489008640.

The previous prime is 1255123399. The next prime is 1255123423. The reversal of 1255123408 is 8043215521.

It is a self number, because there is not a number n which added to its sum of digits gives 1255123408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 508153 + ... + 510616.

It is an arithmetic number, because the mean of its divisors is an integer number (75796488).

Almost surely, 2^1255123408 is an apocalyptic number.

It is an amenable number.

1255123408 is an abundant number, since it is smaller than the sum of its proper divisors (1776736112).

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

1255123408 is a wasteful number, since it uses less digits than its factorization.

1255123408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018795 (or 1018789 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 1255123408 is about 35427.7208976248. The cubic root of 1255123408 is about 1078.6870785528.

Adding to 1255123408 its reverse (8043215521), we get a palindrome (9298338929).

The spelling of 1255123408 in words is "one billion, two hundred fifty-five million, one hundred twenty-three thousand, four hundred eight".