137668025 has 24 divisors (see below), whose sum is σ = 187273728. Its totient is φ = 99560000.

The previous prime is 137667991. The next prime is 137668039. The reversal of 137668025 is 520866731.

It is not a de Polignac number, because 137668025 - 2¹⁸ = 137405881 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 137668025.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 51215 + ... + 53835.

It is an arithmetic number, because the mean of its divisors is an integer number (7803072).

Almost surely, 2^137668025 is an apocalyptic number.

It is an amenable number.

137668025 is a deficient number, since it is larger than the sum of its proper divisors (49605703).

137668025 is a wasteful number, since it uses less digits than its factorization.

137668025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833 (or 2828 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 137668025 is about 11733.2018221797. The cubic root of 137668025 is about 516.3502131983.

The spelling of 137668025 in words is "one hundred thirty-seven million, six hundred sixty-eight thousand, twenty-five".