208413425 has 18 divisors (see below), whose sum is σ = 284066454. Its totient is φ = 151571200.

The previous prime is 208413407. The next prime is 208413427. The reversal of 208413425 is 524314802.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 11404129 + 197009296 = 3377^2 + 14036^2 .

It is not a de Polignac number, because 208413425 - 2¹⁶ = 208347889 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208413427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 31424 + ... + 37473.

Almost surely, 2^208413425 is an apocalyptic number.

208413425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

208413425 is a deficient number, since it is larger than the sum of its proper divisors (75653029).

208413425 is a wasteful number, since it uses less digits than its factorization.

208413425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68929 (or 68913 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 208413425 is about 14436.5309198574. The cubic root of 208413425 is about 592.8915083522.

The spelling of 208413425 in words is "two hundred eight million, four hundred thirteen thousand, four hundred twenty-five".