137870925 has 24 divisors (see below), whose sum is σ = 231357216. Its totient is φ = 72431040.

The previous prime is 137870923. The next prime is 137870983. The reversal of 137870925 is 529078731.

It is not a de Polignac number, because 137870925 - 2¹ = 137870923 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137870923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8694 + ... + 18743.

It is an arithmetic number, because the mean of its divisors is an integer number (9639884).

Almost surely, 2^137870925 is an apocalyptic number.

137870925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

137870925 is a deficient number, since it is larger than the sum of its proper divisors (93486291).

137870925 is a wasteful number, since it uses less digits than its factorization.

137870925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27517 (or 27512 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 137870925 is about 11741.8450424114. The cubic root of 137870925 is about 516.6037604069.

The spelling of 137870925 in words is "one hundred thirty-seven million, eight hundred seventy thousand, nine hundred twenty-five".