138950025 has 48 divisors (see below), whose sum is σ = 238943040. Its totient is φ = 71193600.

The previous prime is 138950023. The next prime is 138950033. The reversal of 138950025 is 520059831.

It is not a de Polignac number, because 138950025 - 2¹ = 138950023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138950023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 224166 + ... + 224784.

It is an arithmetic number, because the mean of its divisors is an integer number (4977980).

Almost surely, 2^138950025 is an apocalyptic number.

138950025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138950025 is a deficient number, since it is larger than the sum of its proper divisors (99993015).

138950025 is a wasteful number, since it uses less digits than its factorization.

138950025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 741 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 138950025 is about 11787.7065199300. The cubic root of 138950025 is about 517.9480588239.

The spelling of 138950025 in words is "one hundred thirty-eight million, nine hundred fifty thousand, twenty-five".