137556625 has 16 divisors (see below), whose sum is σ = 172690128. Its totient is φ = 109392000.

The previous prime is 137556623. The next prime is 137556659. The reversal of 137556625 is 526655731.

It can be written as a sum of positive squares in 8 ways, for example, as 31404816 + 106151809 = 5604^2 + 10303^2 .

It is not a de Polignac number, because 137556625 - 2¹ = 137556623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137556623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18445 + ... + 24805.

It is an arithmetic number, because the mean of its divisors is an integer number (10793133).

Almost surely, 2^137556625 is an apocalyptic number.

It is an amenable number.

137556625 is a deficient number, since it is larger than the sum of its proper divisors (35133503).

137556625 is an equidigital number, since it uses as much as digits as its factorization.

137556625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6549 (or 6539 counting only the distinct ones).

The product of its digits is 189000, while the sum is 40.

The square root of 137556625 is about 11728.4536491389. The cubic root of 137556625 is about 516.2108999577.

The spelling of 137556625 in words is "one hundred thirty-seven million, five hundred fifty-six thousand, six hundred twenty-five".