125555213 has 4 divisors (see below), whose sum is σ = 143491680. Its totient is φ = 107618748.

The previous prime is 125555203. The next prime is 125555219. The reversal of 125555213 is 312555521.

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 125555213 - 2⁴ = 125555197 is a prime.

It is a super-2 number, since 2×125555213² = 31528223022950738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125555219) 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, 8968223 + ... + 8968236.

It is an arithmetic number, because the mean of its divisors is an integer number (35872920).

Almost surely, 2^125555213 is an apocalyptic number.

It is an amenable number.

125555213 is a deficient number, since it is larger than the sum of its proper divisors (17936467).

125555213 is an equidigital number, since it uses as much as digits as its factorization.

125555213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17936466.

The product of its digits is 7500, while the sum is 29.

The square root of 125555213 is about 11205.1422570175. The cubic root of 125555213 is about 500.7391906558.

The spelling of 125555213 in words is "one hundred twenty-five million, five hundred fifty-five thousand, two hundred thirteen".