421772277125 has 64 divisors (see below), whose sum is σ = 557020152000. Its totient is φ = 318374784000.

The previous prime is 421772277107. The next prime is 421772277161. The reversal of 421772277125 is 521772277124.

It can be written as a sum of positive squares in 32 ways, for example, as 416455971556 + 5316305569 = 645334^2 + 72913^2 .

It is not a de Polignac number, because 421772277125 - 2²⁴ = 421755499909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421772277125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34710551 + ... + 34722699.

It is an arithmetic number, because the mean of its divisors is an integer number (8703439875).

Almost surely, 2^421772277125 is an apocalyptic number.

It is an amenable number.

421772277125 is a deficient number, since it is larger than the sum of its proper divisors (135247874875).

421772277125 is a wasteful number, since it uses less digits than its factorization.

421772277125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12411 (or 12401 counting only the distinct ones).

The product of its digits is 768320, while the sum is 47.

Subtracting 421772277125 from its reverse (521772277124), we obtain a palindrome (99999999999).

The spelling of 421772277125 in words is "four hundred twenty-one billion, seven hundred seventy-two million, two hundred seventy-seven thousand, one hundred twenty-five".