425221323435 has 64 divisors (see below), whose sum is σ = 780499906560. Its totient is φ = 219422545920.

The previous prime is 425221323379. The next prime is 425221323469. The reversal of 425221323435 is 534323122524.

425221323435 is a `hidden beast` number, since 4 + 2 + 5 + 2 + 213 + 2 + 3 + 435 = 666.

It is not a de Polignac number, because 425221323435 - 2¹⁵ = 425221290667 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 425221323435.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29191464 + ... + 29206026.

It is an arithmetic number, because the mean of its divisors is an integer number (12195311040).

Almost surely, 2^425221323435 is an apocalyptic number.

425221323435 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

425221323435 is a deficient number, since it is larger than the sum of its proper divisors (355278583125).

425221323435 is a wasteful number, since it uses less digits than its factorization.

425221323435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21585 (or 21579 counting only the distinct ones).

The product of its digits is 172800, while the sum is 36.

Adding to 425221323435 its reverse (534323122524), we get a palindrome (959544445959).

The spelling of 425221323435 in words is "four hundred twenty-five billion, two hundred twenty-one million, three hundred twenty-three thousand, four hundred thirty-five".