125254138 has 16 divisors (see below), whose sum is σ = 190794240. Its totient is φ = 61661376.

The previous prime is 125254127. The next prime is 125254169. The reversal of 125254138 is 831452521.

It is a super-2 number, since 2×125254138² = 31377198172246088, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54823 + ... + 57061.

It is an arithmetic number, because the mean of its divisors is an integer number (11924640).

Almost surely, 2^125254138 is an apocalyptic number.

125254138 is a deficient number, since it is larger than the sum of its proper divisors (65540102).

125254138 is a wasteful number, since it uses less digits than its factorization.

125254138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2661.

The product of its digits is 9600, while the sum is 31.

The square root of 125254138 is about 11191.6995134787. The cubic root of 125254138 is about 500.3386212861.

The spelling of 125254138 in words is "one hundred twenty-five million, two hundred fifty-four thousand, one hundred thirty-eight".