138460925 has 12 divisors (see below), whose sum is σ = 174045780. Its totient is φ = 109249920.

The previous prime is 138460921. The next prime is 138460939. The reversal of 138460925 is 529064831.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 116281 + 138344644 = 341^2 + 11762^2 .

It is not a de Polignac number, because 138460925 - 2² = 138460921 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138460921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36110 + ... + 39759.

It is an arithmetic number, because the mean of its divisors is an integer number (14503815).

Almost surely, 2^138460925 is an apocalyptic number.

It is an amenable number.

138460925 is a deficient number, since it is larger than the sum of its proper divisors (35584855).

138460925 is an equidigital number, since it uses as much as digits as its factorization.

138460925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75952 (or 75947 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 138460925 is about 11766.9420411592. The cubic root of 138460925 is about 517.3396237304.

The spelling of 138460925 in words is "one hundred thirty-eight million, four hundred sixty thousand, nine hundred twenty-five".