1225256356341 has 6 divisors (see below), whose sum is σ = 1769814736950. Its totient is φ = 816837570888.

The previous prime is 1225256356297. The next prime is 1225256356399. The reversal of 1225256356341 is 1436536525221.

1225256356341 is a `hidden beast` number, since 1 + 2 + 2 + 5 + 2 + 5 + 6 + 3 + 5 + 634 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1086850035441 + 138406320900 = 1042521^2 + 372030^2 .

It is not a de Polignac number, because 1225256356341 - 2¹⁰ = 1225256355317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225256355341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68069797566 + ... + 68069797583.

It is an arithmetic number, because the mean of its divisors is an integer number (294969122825).

Almost surely, 2^{1225256356341} is an apocalyptic number.

It is an amenable number.

1225256356341 is a deficient number, since it is larger than the sum of its proper divisors (544558380609).

1225256356341 is a wasteful number, since it uses less digits than its factorization.

1225256356341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136139595155 (or 136139595152 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 45.

The spelling of 1225256356341 in words is "one trillion, two hundred twenty-five billion, two hundred fifty-six million, three hundred fifty-six thousand, three hundred forty-one".