425435541550221 has 4 divisors (see below), whose sum is σ = 567247388733632. Its totient is φ = 283623694366812.

The previous prime is 425435541550177. The next prime is 425435541550259. The reversal of 425435541550221 is 122055145534524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 425435541550221 - 2¹⁴ = 425435541533837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425435541552221) 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, 70905923591701 + ... + 70905923591706.

It is an arithmetic number, because the mean of its divisors is an integer number (141811847183408).

Almost surely, 2^{425435541550221} is an apocalyptic number.

It is an amenable number.

425435541550221 is a deficient number, since it is larger than the sum of its proper divisors (141811847183411).

425435541550221 is a wasteful number, since it uses less digits than its factorization.

425435541550221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141811847183410.

The product of its (nonzero) digits is 4800000, while the sum is 48.

The spelling of 425435541550221 in words is "four hundred twenty-five trillion, four hundred thirty-five billion, five hundred forty-one million, five hundred fifty thousand, two hundred twenty-one".