125243401 has 2 divisors, whose sum is σ = 125243402. Its totient is φ = 125243400.

The previous prime is 125243359. The next prime is 125243407. The reversal of 125243401 is 104342521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124992400 + 251001 = 11180^2 + 501^2 .

It is a cyclic number.

It is not a de Polignac number, because 125243401 - 2¹⁵ = 125210633 is a prime.

It is not a weakly prime, because it can be changed into another prime (125243407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62621700 + 62621701.

It is an arithmetic number, because the mean of its divisors is an integer number (62621701).

Almost surely, 2^125243401 is an apocalyptic number.

It is an amenable number.

125243401 is a deficient number, since it is larger than the sum of its proper divisors (1).

125243401 is an equidigital number, since it uses as much as digits as its factorization.

125243401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 125243401 is about 11191.2198173389. The cubic root of 125243401 is about 500.3243242487.

Adding to 125243401 its reverse (104342521), we get a palindrome (229585922).

The spelling of 125243401 in words is "one hundred twenty-five million, two hundred forty-three thousand, four hundred one".