1256261152 has 24 divisors (see below), whose sum is σ = 2603437200. Its totient is φ = 595070784.

The previous prime is 1256261131. The next prime is 1256261183. The reversal of 1256261152 is 2511626521.

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, 1032502 + ... + 1033717.

It is an arithmetic number, because the mean of its divisors is an integer number (108476550).

Almost surely, 2^1256261152 is an apocalyptic number.

It is an amenable number.

1256261152 is an abundant number, since it is smaller than the sum of its proper divisors (1347176048).

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

1256261152 is a wasteful number, since it uses less digits than its factorization.

1256261152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066248 (or 2066240 counting only the distinct ones).

The product of its digits is 7200, while the sum is 31.

The square root of 1256261152 is about 35443.7745168316. The cubic root of 1256261152 is about 1079.0129161288.

Adding to 1256261152 its reverse (2511626521), we get a palindrome (3767887673).

The spelling of 1256261152 in words is "one billion, two hundred fifty-six million, two hundred sixty-one thousand, one hundred fifty-two".