125712245 has 16 divisors (see below), whose sum is σ = 158267520. Its totient is φ = 95726400.

The previous prime is 125712179. The next prime is 125712247. The reversal of 125712245 is 542217521.

It is a happy number.

It is not a de Polignac number, because 125712245 - 2¹⁴ = 125695861 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125712247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4190 + ... + 16400.

It is an arithmetic number, because the mean of its divisors is an integer number (9891720).

Almost surely, 2^125712245 is an apocalyptic number.

It is an amenable number.

125712245 is a deficient number, since it is larger than the sum of its proper divisors (32555275).

125712245 is a wasteful number, since it uses less digits than its factorization.

125712245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12316.

The product of its digits is 5600, while the sum is 29.

The square root of 125712245 is about 11212.1472073818. The cubic root of 125712245 is about 500.9478619799.

Adding to 125712245 its reverse (542217521), we get a palindrome (667929766).

The spelling of 125712245 in words is "one hundred twenty-five million, seven hundred twelve thousand, two hundred forty-five".