137408825 has 6 divisors (see below), whose sum is σ = 170386974. Its totient is φ = 109927040.

The previous prime is 137408797. The next prime is 137408827. The reversal of 137408825 is 528804731.

It can be written as a sum of positive squares in 3 ways, for example, as 2105401 + 135303424 = 1451^2 + 11632^2 .

It is not a de Polignac number, because 137408825 - 2¹⁰ = 137407801 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (137408827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2748152 + ... + 2748201.

It is an arithmetic number, because the mean of its divisors is an integer number (28397829).

Almost surely, 2^137408825 is an apocalyptic number.

It is an amenable number.

137408825 is a deficient number, since it is larger than the sum of its proper divisors (32978149).

137408825 is an equidigital number, since it uses as much as digits as its factorization.

137408825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5496363 (or 5496358 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 137408825 is about 11722.1510398049. The cubic root of 137408825 is about 516.0259499098.

The spelling of 137408825 in words is "one hundred thirty-seven million, four hundred eight thousand, eight hundred twenty-five".