125982001 has 2 divisors, whose sum is σ = 125982002. Its totient is φ = 125982000.

The previous prime is 125981957. The next prime is 125982029. The reversal of 125982001 is 100289521.

It is an a-pointer prime, because the next prime (125982029) can be obtained adding 125982001 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116618401 + 9363600 = 10799^2 + 3060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125982001 is a prime.

It is not a weakly prime, because it can be changed into another prime (125982041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62991000 + 62991001.

It is an arithmetic number, because the mean of its divisors is an integer number (62991001).

Almost surely, 2^125982001 is an apocalyptic number.

It is an amenable number.

125982001 is a deficient number, since it is larger than the sum of its proper divisors (1).

125982001 is an equidigital number, since it uses as much as digits as its factorization.

125982001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 125982001 is about 11224.1703925056. The cubic root of 125982001 is about 501.3059208387.

The spelling of 125982001 in words is "one hundred twenty-five million, nine hundred eighty-two thousand, one".