137697625 has 16 divisors (see below), whose sum is σ = 185067792. Its totient is φ = 101683200.

The previous prime is 137697559. The next prime is 137697647. The reversal of 137697625 is 526796731.

It can be written as a sum of positive squares in 8 ways, for example, as 53406864 + 84290761 = 7308^2 + 9181^2 .

It is not a de Polignac number, because 137697625 - 2¹¹ = 137695577 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40744 + ... + 43993.

It is an arithmetic number, because the mean of its divisors is an integer number (11566737).

Almost surely, 2^137697625 is an apocalyptic number.

It is an amenable number.

137697625 is a deficient number, since it is larger than the sum of its proper divisors (47370167).

137697625 is an equidigital number, since it uses as much as digits as its factorization.

137697625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84765 (or 84755 counting only the distinct ones).

The product of its digits is 476280, while the sum is 46.

The square root of 137697625 is about 11734.4631321591. The cubic root of 137697625 is about 516.3872173635.

The spelling of 137697625 in words is "one hundred thirty-seven million, six hundred ninety-seven thousand, six hundred twenty-five".