13401225 has 18 divisors (see below), whose sum is σ = 24003486. Its totient is φ = 7147200.

The previous prime is 13401217. The next prime is 13401233. The reversal of 13401225 is 52210431.

13401225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13401217) and next prime (13401233).

It can be written as a sum of positive squares in 3 ways, for example, as 4562496 + 8838729 = 2136^2 + 2973^2 .

It is not a de Polignac number, because 13401225 - 2³ = 13401217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13401198 and 13401207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 29556 + ... + 30005.

It is an arithmetic number, because the mean of its divisors is an integer number (1333527).

Almost surely, 2^13401225 is an apocalyptic number.

13401225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13401225 is a deficient number, since it is larger than the sum of its proper divisors (10602261).

13401225 is a wasteful number, since it uses less digits than its factorization.

13401225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59577 (or 59569 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 13401225 is about 3660.7683619699. The cubic root of 13401225 is about 237.5280114699.

Adding to 13401225 its reverse (52210431), we get a palindrome (65611656).

The spelling of 13401225 in words is "thirteen million, four hundred one thousand, two hundred twenty-five".