425144521 has 8 divisors (see below), whose sum is σ = 432247104. Its totient is φ = 418073040.

The previous prime is 425144519. The next prime is 425144549. The reversal of 425144521 is 125441524.

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

It is a cyclic number.

It is not a de Polignac number, because 425144521 - 2¹ = 425144519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 425144521.

It is not an unprimeable number, because it can be changed into a prime (425144591) 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, 20646 + ... + 35728.

It is an arithmetic number, because the mean of its divisors is an integer number (54030888).

Almost surely, 2^425144521 is an apocalyptic number.

It is an amenable number.

425144521 is a deficient number, since it is larger than the sum of its proper divisors (7102583).

425144521 is a wasteful number, since it uses less digits than its factorization.

425144521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15551.

The product of its digits is 6400, while the sum is 28.

The square root of 425144521 is about 20619.0329792646. The cubic root of 425144521 is about 751.9325101883.

The spelling of 425144521 in words is "four hundred twenty-five million, one hundred forty-four thousand, five hundred twenty-one".