425350021 has 8 divisors (see below), whose sum is σ = 427680000. Its totient is φ = 423027120.

The previous prime is 425350007. The next prime is 425350027. The reversal of 425350021 is 120053524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425350021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 425349974 and 425350001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425350027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153355 + ... + 156103.

It is an arithmetic number, because the mean of its divisors is an integer number (53460000).

Almost surely, 2^425350021 is an apocalyptic number.

It is an amenable number.

425350021 is a deficient number, since it is larger than the sum of its proper divisors (2329979).

425350021 is a wasteful number, since it uses less digits than its factorization.

425350021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3539.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 425350021 is about 20624.0156371159. The cubic root of 425350021 is about 752.0536433034.

The spelling of 425350021 in words is "four hundred twenty-five million, three hundred fifty thousand, twenty-one".