125345221 has 8 divisors (see below), whose sum is σ = 129805920. Its totient is φ = 120893808.

The previous prime is 125345219. The next prime is 125345249. The reversal of 125345221 is 122543521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125345221 - 2¹ = 125345219 is a prime.

It is a super-2 number, since 2×125345221² = 31422848855077682, 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 (125345281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36250 + ... + 39556.

It is an arithmetic number, because the mean of its divisors is an integer number (16225740).

Almost surely, 2^125345221 is an apocalyptic number.

It is an amenable number.

125345221 is a deficient number, since it is larger than the sum of its proper divisors (4460699).

125345221 is a wasteful number, since it uses less digits than its factorization.

125345221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4643.

The product of its digits is 2400, while the sum is 25.

The square root of 125345221 is about 11195.7679950953. The cubic root of 125345221 is about 500.4598715733.

Adding to 125345221 its reverse (122543521), we get a palindrome (247888742).

The spelling of 125345221 in words is "one hundred twenty-five million, three hundred forty-five thousand, two hundred twenty-one".