13421204425 has 24 divisors (see below), whose sum is σ = 16802892800. Its totient is φ = 10633654080.

The previous prime is 13421204411. The next prime is 13421204429. The reversal of 13421204425 is 52440212431.

It is not a de Polignac number, because 13421204425 - 2⁵ = 13421204393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13421204393 and 13421204402.

It is not an unprimeable number, because it can be changed into a prime (13421204429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1961911 + ... + 1968739.

Almost surely, 2^13421204425 is an apocalyptic number.

It is an amenable number.

13421204425 is a deficient number, since it is larger than the sum of its proper divisors (3381688375).

13421204425 is a wasteful number, since it uses less digits than its factorization.

13421204425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7585 (or 7580 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 13421204425 its reverse (52440212431), we get a palindrome (65861416856).

The spelling of 13421204425 in words is "thirteen billion, four hundred twenty-one million, two hundred four thousand, four hundred twenty-five".