138377025 has 96 divisors (see below), whose sum is σ = 278553600. Its totient is φ = 67046400.

The previous prime is 138377021. The next prime is 138377027. The reversal of 138377025 is 520773831.

It is not a de Polignac number, because 138377025 - 2² = 138377021 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138377021) 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, 355531 + ... + 355919.

It is an arithmetic number, because the mean of its divisors is an integer number (2901600).

Almost surely, 2^138377025 is an apocalyptic number.

138377025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138377025 is an abundant number, since it is smaller than the sum of its proper divisors (140176575).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138377025 is a wasteful number, since it uses less digits than its factorization.

138377025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 138377025 is about 11763.3764285600. The cubic root of 138377025 is about 517.2351091309.

The spelling of 138377025 in words is "one hundred thirty-eight million, three hundred seventy-seven thousand, twenty-five".