425451621 has 16 divisors (see below), whose sum is σ = 649254528. Its totient is φ = 242760000.

The previous prime is 425451619. The next prime is 425451647. The reversal of 425451621 is 126154524.

It is not a de Polignac number, because 425451621 - 2¹ = 425451619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425451601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271 + ... + 29171.

It is an arithmetic number, because the mean of its divisors is an integer number (40578408).

Almost surely, 2^425451621 is an apocalyptic number.

It is an amenable number.

425451621 is a deficient number, since it is larger than the sum of its proper divisors (223802907).

425451621 is a wasteful number, since it uses less digits than its factorization.

425451621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29612.

The product of its digits is 9600, while the sum is 30.

The square root of 425451621 is about 20626.4786379062. The cubic root of 425451621 is about 752.1135175744.

The spelling of 425451621 in words is "four hundred twenty-five million, four hundred fifty-one thousand, six hundred twenty-one".