1255577900 has 18 divisors (see below), whose sum is σ = 2724604260. Its totient is φ = 502231120.

The previous prime is 1255577899. The next prime is 1255577909. The reversal of 1255577900 is 97755521.

It is not an unprimeable number, because it can be changed into a prime (1255577909) 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, 6277790 + ... + 6277989.

Almost surely, 2^1255577900 is an apocalyptic number.

1255577900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255577900 is an abundant number, since it is smaller than the sum of its proper divisors (1469026360).

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

1255577900 is a wasteful number, since it uses less digits than its factorization.

1255577900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12555793 (or 12555786 counting only the distinct ones).

The product of its (nonzero) digits is 110250, while the sum is 41.

The square root of 1255577900 is about 35434.1346726571. The cubic root of 1255577900 is about 1078.8172637551.

The spelling of 1255577900 in words is "one billion, two hundred fifty-five million, five hundred seventy-seven thousand, nine hundred".