1255320232550 has 72 divisors (see below), whose sum is σ = 2415000229200. Its totient is φ = 485455982400.

The previous prime is 1255320232541. The next prime is 1255320232567. The reversal of 1255320232550 is 552320235521.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1255320232550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 51353231 + ... + 51377669.

It is an arithmetic number, because the mean of its divisors is an integer number (33541669850).

Almost surely, 2^{1255320232550} is an apocalyptic number.

1255320232550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1255320232550 is a deficient number, since it is larger than the sum of its proper divisors (1159679996650).

1255320232550 is a wasteful number, since it uses less digits than its factorization.

1255320232550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25582 (or 25546 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 1255320232550 in words is "one trillion, two hundred fifty-five billion, three hundred twenty million, two hundred thirty-two thousand, five hundred fifty".