138017425 has 96 divisors (see below), whose sum is σ = 231096320. Its totient is φ = 79315200.

The previous prime is 138017423. The next prime is 138017431. The reversal of 138017425 is 524710831.

138017425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 138017425 - 2¹ = 138017423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (138017423) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1339924 + ... + 1340026.

Almost surely, 2^138017425 is an apocalyptic number.

It is an amenable number.

138017425 is a deficient number, since it is larger than the sum of its proper divisors (93078895).

138017425 is a wasteful number, since it uses less digits than its factorization.

138017425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 138017425 is about 11748.0817583127. The cubic root of 138017425 is about 516.7866746321.

The spelling of 138017425 in words is "one hundred thirty-eight million, seventeen thousand, four hundred twenty-five".