1256260461 has 16 divisors (see below), whose sum is σ = 1735807488. Its totient is φ = 807321600.

The previous prime is 1256260427. The next prime is 1256260469. The reversal of 1256260461 is 1640626521.

It is not a de Polignac number, because 1256260461 - 2¹⁹ = 1255736173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256260469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2380 + ... + 50181.

It is an arithmetic number, because the mean of its divisors is an integer number (108487968).

Almost surely, 2^1256260461 is an apocalyptic number.

It is an amenable number.

1256260461 is a deficient number, since it is larger than the sum of its proper divisors (479547027).

1256260461 is a wasteful number, since it uses less digits than its factorization.

1256260461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52852.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 1256260461 is about 35443.7647689971. The cubic root of 1256260461 is about 1079.0127182935.

Adding to 1256260461 its reverse (1640626521), we get a palindrome (2896886982).

The spelling of 1256260461 in words is "one billion, two hundred fifty-six million, two hundred sixty thousand, four hundred sixty-one".