125202521 has 4 divisors (see below), whose sum is σ = 129241344. Its totient is φ = 121163700.

The previous prime is 125202509. The next prime is 125202527.

It is a happy number.

125202521 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125202521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125202493 and 125202502.

It is not an unprimeable number, because it can be changed into a prime (125202527) 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, 2019365 + ... + 2019426.

It is an arithmetic number, because the mean of its divisors is an integer number (32310336).

Almost surely, 2^125202521 is an apocalyptic number.

It is an amenable number.

125202521 is a deficient number, since it is larger than the sum of its proper divisors (4038823).

125202521 is an equidigital number, since it uses as much as digits as its factorization.

125202521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4038822.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 125202521 is about 11189.3932364539. The cubic root of 125202521 is about 500.2698823009.

The spelling of 125202521 in words is "one hundred twenty-five million, two hundred two thousand, five hundred twenty-one".