1256325000077 has 4 divisors (see below), whose sum is σ = 1435800000096. Its totient is φ = 1076850000060.

The previous prime is 1256324999971. The next prime is 1256325000089. The reversal of 1256325000077 is 7700005236521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1256325000077 - 2¹⁸ = 1256324737933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1256325000077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256325000377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89737499999 + ... + 89737500012.

It is an arithmetic number, because the mean of its divisors is an integer number (358950000024).

Almost surely, 2^{1256325000077} is an apocalyptic number.

It is an amenable number.

1256325000077 is a deficient number, since it is larger than the sum of its proper divisors (179475000019).

1256325000077 is an equidigital number, since it uses as much as digits as its factorization.

1256325000077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179475000018.

The product of its (nonzero) digits is 88200, while the sum is 38.

The spelling of 1256325000077 in words is "one trillion, two hundred fifty-six billion, three hundred twenty-five million, seventy-seven", and thus it is an aban number.