425233421 has 4 divisors (see below), whose sum is σ = 425970972. Its totient is φ = 424495872.

The previous prime is 425233373. The next prime is 425233447. The reversal of 425233421 is 124332524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 316448521 + 108784900 = 17789^2 + 10430^2 .

It is a cyclic number.

It is not a de Polignac number, because 425233421 - 2¹⁰ = 425232397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425233451) 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, 367910 + ... + 369063.

It is an arithmetic number, because the mean of its divisors is an integer number (106492743).

Almost surely, 2^425233421 is an apocalyptic number.

It is an amenable number.

425233421 is a deficient number, since it is larger than the sum of its proper divisors (737551).

425233421 is an equidigital number, since it uses as much as digits as its factorization.

425233421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737550.

The product of its digits is 5760, while the sum is 26.

The square root of 425233421 is about 20621.1886417830. The cubic root of 425233421 is about 751.9849175761.

Adding to 425233421 its reverse (124332524), we get a palindrome (549565945).

It can be divided in two parts, 4252 and 33421, that added together give a palindrome (37673).

The spelling of 425233421 in words is "four hundred twenty-five million, two hundred thirty-three thousand, four hundred twenty-one".