125615249 has 2 divisors, whose sum is σ = 125615250. Its totient is φ = 125615248.

The previous prime is 125615233. The next prime is 125615279. The reversal of 125615249 is 942516521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75134224 + 50481025 = 8668^2 + 7105^2 .

It is a cyclic number.

It is not a de Polignac number, because 125615249 - 2⁴ = 125615233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125615279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62807624 + 62807625.

It is an arithmetic number, because the mean of its divisors is an integer number (62807625).

Almost surely, 2^125615249 is an apocalyptic number.

It is an amenable number.

125615249 is a deficient number, since it is larger than the sum of its proper divisors (1).

125615249 is an equidigital number, since it uses as much as digits as its factorization.

125615249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 35.

The square root of 125615249 is about 11207.8208854353. The cubic root of 125615249 is about 500.8189897790.

The spelling of 125615249 in words is "one hundred twenty-five million, six hundred fifteen thousand, two hundred forty-nine".