1255400103 has 16 divisors (see below), whose sum is σ = 1686593120. Its totient is φ = 830583936.

The previous prime is 1255400101. The next prime is 1255400137. The reversal of 1255400103 is 3010045521.

It is not a de Polignac number, because 1255400103 - 2¹ = 1255400101 is a prime.

It is a super-2 number, since 2×1255400103² = 3152058837224821218, which contains 22 as substring.

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 1255400103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255400101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 751353 + ... + 753021.

It is an arithmetic number, because the mean of its divisors is an integer number (105412070).

Almost surely, 2^1255400103 is an apocalyptic number.

1255400103 is a deficient number, since it is larger than the sum of its proper divisors (431193017).

1255400103 is a wasteful number, since it uses less digits than its factorization.

1255400103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3426.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1255400103 is about 35431.6257459349. The cubic root of 1255400103 is about 1078.7663391231.

Adding to 1255400103 its reverse (3010045521), we get a palindrome (4265445624).

The spelling of 1255400103 in words is "one billion, two hundred fifty-five million, four hundred thousand, one hundred three".