125553049 has 2 divisors, whose sum is σ = 125553050. Its totient is φ = 125553048.

The previous prime is 125553013. The next prime is 125553053. The reversal of 125553049 is 940355521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125552025 + 1024 = 11205^2 + 32^2 .

It is a cyclic number.

It is not a de Polignac number, because 125553049 - 2²¹ = 123455897 is a prime.

It is a super-2 number, since 2×125553049² = 31527136226392802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125553059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62776524 + 62776525.

It is an arithmetic number, because the mean of its divisors is an integer number (62776525).

Almost surely, 2^125553049 is an apocalyptic number.

It is an amenable number.

125553049 is a deficient number, since it is larger than the sum of its proper divisors (1).

125553049 is an equidigital number, since it uses as much as digits as its factorization.

125553049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 125553049 is about 11205.0456937935. The cubic root of 125553049 is about 500.7363138183.

The spelling of 125553049 in words is "one hundred twenty-five million, five hundred fifty-three thousand, forty-nine".