1256030260 has 24 divisors (see below), whose sum is σ = 2680906536. Its totient is φ = 494175360.

The previous prime is 1256030249. The next prime is 1256030263. The reversal of 1256030260 is 620306521.

It can be written as a sum of positive squares in 4 ways, for example, as 151930276 + 1104099984 = 12326^2 + 33228^2 .

It is a super-2 number, since 2×1256030260² = 3155224028071335200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256030263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513547 + ... + 515986.

It is an arithmetic number, because the mean of its divisors is an integer number (111704439).

Almost surely, 2^1256030260 is an apocalyptic number.

1256030260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1256030260 is an abundant number, since it is smaller than the sum of its proper divisors (1424876276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1256030260 is a wasteful number, since it uses less digits than its factorization.

1256030260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029603 (or 1029601 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1256030260 is about 35440.5172084156. The cubic root of 1256030260 is about 1078.9468070732.

Adding to 1256030260 its reverse (620306521), we get a palindrome (1876336781).

The spelling of 1256030260 in words is "one billion, two hundred fifty-six million, thirty thousand, two hundred sixty".