125982401 has 4 divisors (see below), whose sum is σ = 126523332. Its totient is φ = 125441472.

The previous prime is 125982391. The next prime is 125982413. The reversal of 125982401 is 104289521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25000000 + 100982401 = 5000^2 + 10049^2 .

It is a cyclic number.

It is not a de Polignac number, because 125982401 - 2¹⁰ = 125981377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125982421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270116 + ... + 270581.

It is an arithmetic number, because the mean of its divisors is an integer number (31630833).

Almost surely, 2^125982401 is an apocalyptic number.

It is an amenable number.

125982401 is a deficient number, since it is larger than the sum of its proper divisors (540931).

125982401 is an equidigital number, since it uses as much as digits as its factorization.

125982401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540930.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 125982401 is about 11224.1882111804. The cubic root of 125982401 is about 501.3064513963.

The spelling of 125982401 in words is "one hundred twenty-five million, nine hundred eighty-two thousand, four hundred one".