13421525225 has 48 divisors (see below), whose sum is σ = 18173693952. Its totient is φ = 9803439360.

The previous prime is 13421525219. The next prime is 13421525233. The reversal of 13421525225 is 52252512431.

It is not a de Polignac number, because 13421525225 - 2¹⁰ = 13421524201 is a prime.

It is a super-3 number, since 3×13421525225³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13421525191 and 13421525200.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1121624 + ... + 1133526.

It is an arithmetic number, because the mean of its divisors is an integer number (378618624).

Almost surely, 2^13421525225 is an apocalyptic number.

It is an amenable number.

13421525225 is a deficient number, since it is larger than the sum of its proper divisors (4752168727).

13421525225 is a wasteful number, since it uses less digits than its factorization.

13421525225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12026 (or 12021 counting only the distinct ones).

The product of its digits is 24000, while the sum is 32.

The spelling of 13421525225 in words is "thirteen billion, four hundred twenty-one million, five hundred twenty-five thousand, two hundred twenty-five".