1250420555545 has 16 divisors (see below), whose sum is σ = 1716936110208. Its totient is φ = 856394421120.

The previous prime is 1250420555467. The next prime is 1250420555567. The reversal of 1250420555545 is 5455550240521.

It is not a de Polignac number, because 1250420555545 - 2¹³ = 1250420547353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21570996 + ... + 21628885.

It is an arithmetic number, because the mean of its divisors is an integer number (107308506888).

Almost surely, 2^{1250420555545} is an apocalyptic number.

It is an amenable number.

1250420555545 is a deficient number, since it is larger than the sum of its proper divisors (466515554663).

1250420555545 is an equidigital number, since it uses as much as digits as its factorization.

1250420555545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43200720.

The product of its (nonzero) digits is 1000000, while the sum is 43.

The spelling of 1250420555545 in words is "one trillion, two hundred fifty billion, four hundred twenty million, five hundred fifty-five thousand, five hundred forty-five".