137491525 has 12 divisors (see below), whose sum is σ = 171176544. Its totient is φ = 109550000.

The previous prime is 137491457. The next prime is 137491537. The reversal of 137491525 is 525194731.

It is not a de Polignac number, because 137491525 - 2¹¹ = 137489477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4681 + ... + 17230.

It is an arithmetic number, because the mean of its divisors is an integer number (14264712).

Almost surely, 2^137491525 is an apocalyptic number.

It is an amenable number.

137491525 is a deficient number, since it is larger than the sum of its proper divisors (33685019).

137491525 is a wasteful number, since it uses less digits than its factorization.

137491525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22172 (or 22167 counting only the distinct ones).

The product of its digits is 37800, while the sum is 37.

The square root of 137491525 is about 11725.6780187757. The cubic root of 137491525 is about 516.1294531782.

The spelling of 137491525 in words is "one hundred thirty-seven million, four hundred ninety-one thousand, five hundred twenty-five".