1250420205055 has 48 divisors (see below), whose sum is σ = 1765827423360. Its totient is φ = 847490280000.

The previous prime is 1250420205029. The next prime is 1250420205091. The reversal of 1250420205055 is 5505020240521.

It is a happy number.

It is not a de Polignac number, because 1250420205055 - 2¹⁹ = 1250419680767 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7978236 + ... + 8133454.

It is an arithmetic number, because the mean of its divisors is an integer number (36788071320).

Almost surely, 2^{1250420205055} is an apocalyptic number.

1250420205055 is a deficient number, since it is larger than the sum of its proper divisors (515407218305).

1250420205055 is a wasteful number, since it uses less digits than its factorization.

1250420205055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155620 (or 155613 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 31.

Adding to 1250420205055 its reverse (5505020240521), we get a palindrome (6755440445576).

The spelling of 1250420205055 in words is "one trillion, two hundred fifty billion, four hundred twenty million, two hundred five thousand, fifty-five".