1251426255 has 16 divisors (see below), whose sum is σ = 2003633280. Its totient is φ = 666976928.

The previous prime is 1251426221. The next prime is 1251426269. The reversal of 1251426255 is 5526241521.

It is a cyclic number.

It is not a de Polignac number, because 1251426255 - 2²⁷ = 1117208527 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4545 + ... + 50234.

It is an arithmetic number, because the mean of its divisors is an integer number (125227080).

Almost surely, 2^1251426255 is an apocalyptic number.

1251426255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1251426255 is a deficient number, since it is larger than the sum of its proper divisors (752207025).

1251426255 is a wasteful number, since it uses less digits than its factorization.

1251426255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56310.

The product of its digits is 24000, while the sum is 33.

The square root of 1251426255 is about 35375.5036006556. The cubic root of 1251426255 is about 1077.6268923902.

Adding to 1251426255 its reverse (5526241521), we get a palindrome (6777667776).

The spelling of 1251426255 in words is "one billion, two hundred fifty-one million, four hundred twenty-six thousand, two hundred fifty-five".