125089021 has 4 divisors (see below), whose sum is σ = 127998112. Its totient is φ = 122179932.

The previous prime is 125089001. The next prime is 125089033. The reversal of 125089021 is 120980521.

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 not a de Polignac number, because 125089021 - 2¹⁷ = 124957949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125089001) 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, 1454481 + ... + 1454566.

It is an arithmetic number, because the mean of its divisors is an integer number (31999528).

Almost surely, 2^125089021 is an apocalyptic number.

It is an amenable number.

125089021 is a deficient number, since it is larger than the sum of its proper divisors (2909091).

125089021 is an equidigital number, since it uses as much as digits as its factorization.

125089021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2909090.

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

The square root of 125089021 is about 11184.3203190896. The cubic root of 125089021 is about 500.1186665010.

The spelling of 125089021 in words is "one hundred twenty-five million, eighty-nine thousand, twenty-one".