1256262463 has 8 divisors (see below), whose sum is σ = 1332036720. Its totient is φ = 1181453760.

The previous prime is 1256262457. The next prime is 1256262479. The reversal of 1256262463 is 3642626521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1256262463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256262493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238708 + ... + 243913.

It is an arithmetic number, because the mean of its divisors is an integer number (166504590).

Almost surely, 2^1256262463 is an apocalyptic number.

1256262463 is a deficient number, since it is larger than the sum of its proper divisors (75774257).

1256262463 is a wasteful number, since it uses less digits than its factorization.

1256262463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482777.

The product of its digits is 103680, while the sum is 37.

The square root of 1256262463 is about 35443.7930109067. The cubic root of 1256262463 is about 1079.0132914715.

Adding to 1256262463 its reverse (3642626521), we get a palindrome (4898888984).

The spelling of 1256262463 in words is "one billion, two hundred fifty-six million, two hundred sixty-two thousand, four hundred sixty-three".