125546521 has 2 divisors, whose sum is σ = 125546522. Its totient is φ = 125546520.

The previous prime is 125546507. The next prime is 125546557. The reversal of 125546521 is 125645521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71318025 + 54228496 = 8445^2 + 7364^2 .

It is a cyclic number.

It is not a de Polignac number, because 125546521 - 2²³ = 117157913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125546501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62773260 + 62773261.

It is an arithmetic number, because the mean of its divisors is an integer number (62773261).

Almost surely, 2^125546521 is an apocalyptic number.

It is an amenable number.

125546521 is a deficient number, since it is larger than the sum of its proper divisors (1).

125546521 is an equidigital number, since it uses as much as digits as its factorization.

125546521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12000, while the sum is 31.

The square root of 125546521 is about 11204.7543926674. The cubic root of 125546521 is about 500.7276352469.

The spelling of 125546521 in words is "one hundred twenty-five million, five hundred forty-six thousand, five hundred twenty-one".