425545205775220 has 12 divisors (see below), whose sum is σ = 893644932128004. Its totient is φ = 170218082310080.

The previous prime is 425545205775197. The next prime is 425545205775223. The reversal of 425545205775220 is 22577502545524.

It can be written as a sum of positive squares in 2 ways, for example, as 240501909999376 + 185043295775844 = 15508124^2 + 13603062^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425545205775223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10638630144361 + ... + 10638630144400.

It is an arithmetic number, because the mean of its divisors is an integer number (74470411010667).

Almost surely, 2^{425545205775220} is an apocalyptic number.

It is an amenable number.

425545205775220 is an abundant number, since it is smaller than the sum of its proper divisors (468099726352784).

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

425545205775220 is a wasteful number, since it uses less digits than its factorization.

425545205775220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21277260288770 (or 21277260288768 counting only the distinct ones).

The product of its (nonzero) digits is 39200000, while the sum is 55.

The spelling of 425545205775220 in words is "four hundred twenty-five trillion, five hundred forty-five billion, two hundred five million, seven hundred seventy-five thousand, two hundred twenty".