125506361 has 2 divisors, whose sum is σ = 125506362. Its totient is φ = 125506360.

The previous prime is 125506357. The next prime is 125506363. The reversal of 125506361 is 163605521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120012025 + 5494336 = 10955^2 + 2344^2 .

It is a cyclic number.

It is not a de Polignac number, because 125506361 - 2² = 125506357 is a prime.

Together with 125506363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125506363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62753180 + 62753181.

It is an arithmetic number, because the mean of its divisors is an integer number (62753181).

Almost surely, 2^125506361 is an apocalyptic number.

It is an amenable number.

125506361 is a deficient number, since it is larger than the sum of its proper divisors (1).

125506361 is an equidigital number, since it uses as much as digits as its factorization.

125506361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 125506361 is about 11202.9621529308. The cubic root of 125506361 is about 500.6742383965.

The spelling of 125506361 in words is "one hundred twenty-five million, five hundred six thousand, three hundred sixty-one".