125118025 has 6 divisors (see below), whose sum is σ = 155146382. Its totient is φ = 100094400.

The previous prime is 125118023. The next prime is 125118029. The reversal of 125118025 is 520811521.

It can be written as a sum of positive squares in 3 ways, for example, as 14047504 + 111070521 = 3748^2 + 10539^2 .

It is not a de Polignac number, because 125118025 - 2¹ = 125118023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 5004721 = 125118025 / (1 + 2 + 5 + 1 + 1 + 8 + 0 + 2 + 5).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125118023) 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, 2502336 + ... + 2502385.

Almost surely, 2^125118025 is an apocalyptic number.

It is an amenable number.

125118025 is a deficient number, since it is larger than the sum of its proper divisors (30028357).

125118025 is an equidigital number, since it uses as much as digits as its factorization.

125118025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5004731 (or 5004726 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 25.

The square root of 125118025 is about 11185.6168806195. The cubic root of 125118025 is about 500.1573171641.

Adding to 125118025 its reverse (520811521), we get a palindrome (645929546).

The spelling of 125118025 in words is "one hundred twenty-five million, one hundred eighteen thousand, twenty-five".