1256262055 has 4 divisors (see below), whose sum is σ = 1507514472. Its totient is φ = 1005009640.

The previous prime is 1256262041. The next prime is 1256262103. The reversal of 1256262055 is 5502626521.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1256262055 - 2¹³ = 1256253863 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1256262055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125626201 + ... + 125626210.

It is an arithmetic number, because the mean of its divisors is an integer number (376878618).

Almost surely, 2^1256262055 is an apocalyptic number.

1256262055 is a deficient number, since it is larger than the sum of its proper divisors (251252417).

1256262055 is an equidigital number, since it uses as much as digits as its factorization.

1256262055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251252416.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 1256262055 is about 35443.7872553146. The cubic root of 1256262055 is about 1079.0131746600.

Adding to 1256262055 its reverse (5502626521), we get a palindrome (6758888576).

The spelling of 1256262055 in words is "one billion, two hundred fifty-six million, two hundred sixty-two thousand, fifty-five".