125211245 has 4 divisors (see below), whose sum is σ = 150253500. Its totient is φ = 100168992.

The previous prime is 125211217. The next prime is 125211257. The reversal of 125211245 is 542112521.

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 70997476 + 54213769 = 8426^2 + 7363^2 .

It is a cyclic number.

It is not a de Polignac number, because 125211245 - 2⁶ = 125211181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125211245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12521120 + ... + 12521129.

It is an arithmetic number, because the mean of its divisors is an integer number (37563375).

Almost surely, 2^125211245 is an apocalyptic number.

It is an amenable number.

125211245 is a deficient number, since it is larger than the sum of its proper divisors (25042255).

125211245 is an equidigital number, since it uses as much as digits as its factorization.

125211245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25042254.

The product of its digits is 800, while the sum is 23.

The square root of 125211245 is about 11189.7830631340. The cubic root of 125211245 is about 500.2815014841.

Adding to 125211245 its reverse (542112521), we get a palindrome (667323766).

The spelling of 125211245 in words is "one hundred twenty-five million, two hundred eleven thousand, two hundred forty-five".