252252551257 has 4 divisors (see below), whose sum is σ = 288288630016. Its totient is φ = 216216472500.

The previous prime is 252252551249. The next prime is 252252551269. The reversal of 252252551257 is 752155252252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 252252551257 - 2³ = 252252551249 is a prime.

It is the 502248-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252252551357) by changing a digit.

It is a nontrivial repunit in base 502247.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18018039369 + ... + 18018039382.

It is an arithmetic number, because the mean of its divisors is an integer number (72072157504).

Almost surely, 2^252252551257 is an apocalyptic number.

It is an amenable number.

252252551257 is a deficient number, since it is larger than the sum of its proper divisors (36036078759).

252252551257 is an equidigital number, since it uses as much as digits as its factorization.

252252551257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36036078758.

The product of its digits is 700000, while the sum is 43.

The spelling of 252252551257 in words is "two hundred fifty-two billion, two hundred fifty-two million, five hundred fifty-one thousand, two hundred fifty-seven".