125638007 has 16 divisors (see below), whose sum is σ = 146772000. Its totient is φ = 106275840.

The previous prime is 125637991. The next prime is 125638021. The reversal of 125638007 is 700836521.

It is a happy number.

It is not a de Polignac number, because 125638007 - 2⁴ = 125637991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125638067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12869 + ... + 20417.

It is an arithmetic number, because the mean of its divisors is an integer number (9173250).

Almost surely, 2^125638007 is an apocalyptic number.

125638007 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

125638007 is a deficient number, since it is larger than the sum of its proper divisors (21133993).

125638007 is a wasteful number, since it uses less digits than its factorization.

125638007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7666.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 125638007 is about 11208.8361126390. The cubic root of 125638007 is about 500.8492327907.

The spelling of 125638007 in words is "one hundred twenty-five million, six hundred thirty-eight thousand, seven".