125555567 has 2 divisors, whose sum is σ = 125555568. Its totient is φ = 125555566.

The previous prime is 125555531. The next prime is 125555603. The reversal of 125555567 is 765555521.

It is a balanced prime because it is at equal distance from previous prime (125555531) and next prime (125555603).

It is an emirp because it is prime and its reverse (765555521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125555567 - 2²² = 121361263 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125555527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62777783 + 62777784.

It is an arithmetic number, because the mean of its divisors is an integer number (62777784).

Almost surely, 2^125555567 is an apocalyptic number.

125555567 is a deficient number, since it is larger than the sum of its proper divisors (1).

125555567 is an equidigital number, since it uses as much as digits as its factorization.

125555567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 262500, while the sum is 41.

The square root of 125555567 is about 11205.1580533253. The cubic root of 125555567 is about 500.7396612629.

The spelling of 125555567 in words is "one hundred twenty-five million, five hundred fifty-five thousand, five hundred sixty-seven".