1255421262150 has 288 divisors, whose sum is σ = 3818703489120. Its totient is φ = 292900608000.

The previous prime is 1255421262133. The next prime is 1255421262181. The reversal of 1255421262150 is 512621245521.

1255421262150 is a `hidden beast` number, since 1 + 2 + 5 + 5 + 4 + 21 + 2 + 621 + 5 + 0 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 44917180 + ... + 44945120.

It is an arithmetic number, because the mean of its divisors is an integer number (13259387115).

Almost surely, 2^{1255421262150} is an apocalyptic number.

1255421262150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1255421262150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1909351744560).

1255421262150 is an abundant number, since it is smaller than the sum of its proper divisors (2563282226970).

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

1255421262150 is a wasteful number, since it uses less digits than its factorization.

1255421262150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28312 (or 28304 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The spelling of 1255421262150 in words is "one trillion, two hundred fifty-five billion, four hundred twenty-one million, two hundred sixty-two thousand, one hundred fifty".