137620225 has 24 divisors (see below), whose sum is σ = 178738560. Its totient is φ = 104973120.

The previous prime is 137620193. The next prime is 137620267. The reversal of 137620225 is 522026731.

It is not a de Polignac number, because 137620225 - 2⁵ = 137620193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 137620193 and 137620202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59032 + ... + 61318.

It is an arithmetic number, because the mean of its divisors is an integer number (7447440).

Almost surely, 2^137620225 is an apocalyptic number.

It is an amenable number.

137620225 is a deficient number, since it is larger than the sum of its proper divisors (41118335).

137620225 is a wasteful number, since it uses less digits than its factorization.

137620225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409 (or 2404 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 137620225 is about 11731.1646906861. The cubic root of 137620225 is about 516.2904452715.

Adding to 137620225 its reverse (522026731), we get a palindrome (659646956).

The spelling of 137620225 in words is "one hundred thirty-seven million, six hundred twenty thousand, two hundred twenty-five".