425214443000021 has 4 divisors (see below), whose sum is σ = 429342738563232. Its totient is φ = 421086147436812.

The previous prime is 425214442999981. The next prime is 425214443000047. The reversal of 425214443000021 is 120000344412524.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425214443000021 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 (425214443000521) 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, 2064147781451 + ... + 2064147781656.

It is an arithmetic number, because the mean of its divisors is an integer number (107335684640808).

Almost surely, 2^{425214443000021} is an apocalyptic number.

It is an amenable number.

425214443000021 is a deficient number, since it is larger than the sum of its proper divisors (4128295563211).

425214443000021 is a wasteful number, since it uses less digits than its factorization.

425214443000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4128295563210.

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 425214443000021 its reverse (120000344412524), we get a palindrome (545214787412545).

The spelling of 425214443000021 in words is "four hundred twenty-five trillion, two hundred fourteen billion, four hundred forty-three million, twenty-one", and thus it is an aban number.