125378101 has 2 divisors, whose sum is σ = 125378102. Its totient is φ = 125378100.

The previous prime is 125378087. The next prime is 125378161. The reversal of 125378101 is 101873521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85119076 + 40259025 = 9226^2 + 6345^2 .

It is an emirp because it is prime and its reverse (101873521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125378101 - 2⁵ = 125378069 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125378101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125378161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62689050 + 62689051.

It is an arithmetic number, because the mean of its divisors is an integer number (62689051).

Almost surely, 2^125378101 is an apocalyptic number.

It is an amenable number.

125378101 is a deficient number, since it is larger than the sum of its proper divisors (1).

125378101 is an equidigital number, since it uses as much as digits as its factorization.

125378101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 125378101 is about 11197.2363108046. The cubic root of 125378101 is about 500.5036272156.

The spelling of 125378101 in words is "one hundred twenty-five million, three hundred seventy-eight thousand, one hundred one".