1252522555 has 4 divisors (see below), whose sum is σ = 1503027072. Its totient is φ = 1002018040.

The previous prime is 1252522547. The next prime is 1252522559. The reversal of 1252522555 is 5552252521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5552252521 = 2267 ⋅2449163.

It is not a de Polignac number, because 1252522555 - 2³ = 1252522547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1252522555.

It is not an unprimeable number, because it can be changed into a prime (1252522559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125252251 + ... + 125252260.

It is an arithmetic number, because the mean of its divisors is an integer number (375756768).

Almost surely, 2^1252522555 is an apocalyptic number.

1252522555 is a deficient number, since it is larger than the sum of its proper divisors (250504517).

1252522555 is an equidigital number, since it uses as much as digits as its factorization.

1252522555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250504516.

The product of its digits is 50000, while the sum is 34.

The square root of 1252522555 is about 35390.9953943090. The cubic root of 1252522555 is about 1077.9414821206.

The spelling of 1252522555 in words is "one billion, two hundred fifty-two million, five hundred twenty-two thousand, five hundred fifty-five".