125225305 has 4 divisors (see below), whose sum is σ = 150270372. Its totient is φ = 100180240.

The previous prime is 125225299. The next prime is 125225311. The reversal of 125225305 is 503522521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503522521 = 2141 ⋅235181.

It is an interprime number because it is at equal distance from previous prime (125225299) and next prime (125225311).

It can be written as a sum of positive squares in 2 ways, for example, as 51883209 + 73342096 = 7203^2 + 8564^2 .

It is a de Polignac number, because none of the positive numbers 2^k-125225305 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125225305.

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, 12522526 + ... + 12522535.

It is an arithmetic number, because the mean of its divisors is an integer number (37567593).

Almost surely, 2^125225305 is an apocalyptic number.

It is an amenable number.

125225305 is a deficient number, since it is larger than the sum of its proper divisors (25045067).

125225305 is an equidigital number, since it uses as much as digits as its factorization.

125225305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25045066.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 125225305 is about 11190.4112971776. The cubic root of 125225305 is about 500.3002263589.

Adding to 125225305 its reverse (503522521), we get a palindrome (628747826).

The spelling of 125225305 in words is "one hundred twenty-five million, two hundred twenty-five thousand, three hundred five".