1255050251 has 16 divisors (see below), whose sum is σ = 1550205888. Its totient is φ = 989452800.

The previous prime is 1255050227. The next prime is 1255050253. The reversal of 1255050251 is 1520505521.

It is not a de Polignac number, because 1255050251 - 2¹⁰ = 1255049227 is a prime.

It is a super-2 number, since 2×1255050251² = 3150302265070326002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1255050251.

It is not an unprimeable number, because it can be changed into a prime (1255050253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1031 + ... + 50111.

It is an arithmetic number, because the mean of its divisors is an integer number (96887868).

Almost surely, 2^1255050251 is an apocalyptic number.

1255050251 is a deficient number, since it is larger than the sum of its proper divisors (295155637).

1255050251 is a wasteful number, since it uses less digits than its factorization.

1255050251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49382.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 1255050251 is about 35426.6884001313. The cubic root of 1255050251 is about 1078.6661204427. Note that the first 3 decimals are identical.

Adding to 1255050251 its reverse (1520505521), we get a palindrome (2775555772).

It can be divided in two parts, 1255050 and 251, that multiplied together give a triangular number (315017550 = T₂₅₁₀₀).

The spelling of 1255050251 in words is "one billion, two hundred fifty-five million, fifty thousand, two hundred fifty-one".