33421430425 has 6 divisors (see below), whose sum is σ = 41442573758. Its totient is φ = 26737144320.

The previous prime is 33421430389. The next prime is 33421430437. The reversal of 33421430425 is 52403412433.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 220581904 + 33200848521 = 14852^2 + 182211^2 .

It is not a de Polignac number, because 33421430425 - 2¹⁹ = 33420906137 is a prime.

It is a super-2 number, since 2×33421430425² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 668428584 + ... + 668428633.

Almost surely, 2^33421430425 is an apocalyptic number.

It is an amenable number.

33421430425 is a deficient number, since it is larger than the sum of its proper divisors (8021143333).

33421430425 is a wasteful number, since it uses less digits than its factorization.

33421430425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336857227 (or 1336857222 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 33421430425 its reverse (52403412433), we get a palindrome (85824842858).

The spelling of 33421430425 in words is "thirty-three billion, four hundred twenty-one million, four hundred thirty thousand, four hundred twenty-five".