125126501 has 2 divisors, whose sum is σ = 125126502. Its totient is φ = 125126500.

The previous prime is 125126497. The next prime is 125126527. The reversal of 125126501 is 105621521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117202276 + 7924225 = 10826^2 + 2815^2 .

It is an emirp because it is prime and its reverse (105621521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125126501 - 2² = 125126497 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125126531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62563250 + 62563251.

It is an arithmetic number, because the mean of its divisors is an integer number (62563251).

Almost surely, 2^125126501 is an apocalyptic number.

It is an amenable number.

125126501 is a deficient number, since it is larger than the sum of its proper divisors (1).

125126501 is an equidigital number, since it uses as much as digits as its factorization.

125126501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 125126501 is about 11185.9957536198. The cubic root of 125126501 is about 500.1686111342.

The spelling of 125126501 in words is "one hundred twenty-five million, one hundred twenty-six thousand, five hundred one".