1255561626530 has 32 divisors (see below), whose sum is σ = 2423844907200. Its totient is φ = 466814567232.

The previous prime is 1255561626521. The next prime is 1255561626559. The reversal of 1255561626530 is 356261655521.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62331620 + ... + 62351759.

It is an arithmetic number, because the mean of its divisors is an integer number (75745153350).

Almost surely, 2^{1255561626530} is an apocalyptic number.

1255561626530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1255561626530 is a deficient number, since it is larger than the sum of its proper divisors (1168283280670).

1255561626530 is a wasteful number, since it uses less digits than its factorization.

1255561626530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124683458.

The product of its (nonzero) digits is 1620000, while the sum is 47.

The spelling of 1255561626530 in words is "one trillion, two hundred fifty-five billion, five hundred sixty-one million, six hundred twenty-six thousand, five hundred thirty".