125555252243 has 2 divisors, whose sum is σ = 125555252244. Its totient is φ = 125555252242.

The previous prime is 125555252239. The next prime is 125555252293. The reversal of 125555252243 is 342252555521.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (342252555521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125555252243 - 2² = 125555252239 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125555252243.

It is not a weakly prime, because it can be changed into another prime (125555252293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62777626121 + 62777626122.

It is an arithmetic number, because the mean of its divisors is an integer number (62777626122).

Almost surely, 2^125555252243 is an apocalyptic number.

125555252243 is a deficient number, since it is larger than the sum of its proper divisors (1).

125555252243 is an equidigital number, since it uses as much as digits as its factorization.

125555252243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 600000, while the sum is 41.

The spelling of 125555252243 in words is "one hundred twenty-five billion, five hundred fifty-five million, two hundred fifty-two thousand, two hundred forty-three".