1255025251 has 2 divisors, whose sum is σ = 1255025252. Its totient is φ = 1255025250.

The previous prime is 1255025249. The next prime is 1255025269. The reversal of 1255025251 is 1525205521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1255025251 - 2¹ = 1255025249 is a prime.

It is a super-2 number, since 2×1255025251² = 3150176761295226002, which contains 22 as substring.

Together with 1255025249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1255025201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627512625 + 627512626.

It is an arithmetic number, because the mean of its divisors is an integer number (627512626).

Almost surely, 2^1255025251 is an apocalyptic number.

1255025251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255025251 is an equidigital number, since it uses as much as digits as its factorization.

1255025251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 1255025251 is about 35426.3355570400. The cubic root of 1255025251 is about 1078.6589582242.

The spelling of 1255025251 in words is "one billion, two hundred fifty-five million, twenty-five thousand, two hundred fifty-one".