125312225 has 6 divisors (see below), whose sum is σ = 155387190. Its totient is φ = 100249760.

The previous prime is 125312203. The next prime is 125312227. The reversal of 125312225 is 522213521.

It can be written as a sum of positive squares in 3 ways, for example, as 677329 + 124634896 = 823^2 + 11164^2 .

It is not a de Polignac number, because 125312225 - 2¹⁰ = 125311201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125312225.

It is not an unprimeable number, because it can be changed into a prime (125312227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2506220 + ... + 2506269.

It is an arithmetic number, because the mean of its divisors is an integer number (25897865).

Almost surely, 2^125312225 is an apocalyptic number.

It is an amenable number.

125312225 is a deficient number, since it is larger than the sum of its proper divisors (30074965).

125312225 is an equidigital number, since it uses as much as digits as its factorization.

125312225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5012499 (or 5012494 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 125312225 is about 11194.2943055826. The cubic root of 125312225 is about 500.4159538688.

Adding to 125312225 its reverse (522213521), we get a palindrome (647525746).

The spelling of 125312225 in words is "one hundred twenty-five million, three hundred twelve thousand, two hundred twenty-five".