421550055125 has 32 divisors (see below), whose sum is σ = 553312041984. Its totient is φ = 320203416000.

The previous prime is 421550055107. The next prime is 421550055181. The reversal of 421550055125 is 521550055124.

It is not a de Polignac number, because 421550055125 - 2⁶ = 421550055061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 820919 + ... + 1231668.

It is an arithmetic number, because the mean of its divisors is an integer number (17291001312).

Almost surely, 2^421550055125 is an apocalyptic number.

It is an amenable number.

421550055125 is a deficient number, since it is larger than the sum of its proper divisors (131761986859).

421550055125 is a wasteful number, since it uses less digits than its factorization.

421550055125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052686 (or 2052676 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 35.

Subtracting 421550055125 from its reverse (521550055124), we obtain a palindrome (99999999999).

The spelling of 421550055125 in words is "four hundred twenty-one billion, five hundred fifty million, fifty-five thousand, one hundred twenty-five".