1251341241255 has 24 divisors (see below), whose sum is σ = 2478847411872. Its totient is φ = 572041710144.

The previous prime is 1251341241233. The next prime is 1251341241277. The reversal of 1251341241255 is 5521421431521.

1251341241255 is a `hidden beast` number, since 1 + 2 + 51 + 341 + 241 + 25 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1251341241233) and next prime (1251341241277).

It is not a de Polignac number, because 1251341241255 - 2⁵ = 1251341241223 is a prime.

It is a super-2 number, since 2×1251341241255² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1986255624 + ... + 1986256253.

It is an arithmetic number, because the mean of its divisors is an integer number (103285308828).

Almost surely, 2^{1251341241255} is an apocalyptic number.

1251341241255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1251341241255 is a deficient number, since it is larger than the sum of its proper divisors (1227506170617).

1251341241255 is a wasteful number, since it uses less digits than its factorization.

1251341241255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3972511895 (or 3972511892 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

Adding to 1251341241255 its reverse (5521421431521), we get a palindrome (6772762672776).

The spelling of 1251341241255 in words is "one trillion, two hundred fifty-one billion, three hundred forty-one million, two hundred forty-one thousand, two hundred fifty-five".