137725330 has 16 divisors (see below), whose sum is σ = 262488600. Its totient is φ = 51849472.

The previous prime is 137725297. The next prime is 137725331. The reversal of 137725330 is 33527731.

It can be written as a sum of positive squares in 4 ways, for example, as 120494529 + 17230801 = 10977^2 + 4151^2 .

It is a junction number, because it is equal to n+sod(n) for n = 137725292 and 137725301.

It is not an unprimeable number, because it can be changed into a prime (137725331) 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 7 ways as a sum of consecutive naturals, for example, 404905 + ... + 405244.

Almost surely, 2^137725330 is an apocalyptic number.

137725330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137725330 is a deficient number, since it is larger than the sum of its proper divisors (124763270).

137725330 is a wasteful number, since it uses less digits than its factorization.

137725330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810173.

The product of its (nonzero) digits is 13230, while the sum is 31.

The square root of 137725330 is about 11735.6435699113. The cubic root of 137725330 is about 516.4218477078.

The spelling of 137725330 in words is "one hundred thirty-seven million, seven hundred twenty-five thousand, three hundred thirty".