1345242025261 has 32 divisors (see below), whose sum is σ = 1442334965760. Its totient is φ = 1251907709184.

The previous prime is 1345242025249. The next prime is 1345242025291. The reversal of 1345242025261 is 1625202425431.

It is a cyclic number.

It is not a de Polignac number, because 1345242025261 - 2³⁵ = 1310882286893 is a prime.

It is a super-2 number, since 2×1345242025261² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1345242025261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345242025241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60779845 + ... + 60801973.

It is an arithmetic number, because the mean of its divisors is an integer number (45072967680).

Almost surely, 2^{1345242025261} is an apocalyptic number.

It is an amenable number.

1345242025261 is a deficient number, since it is larger than the sum of its proper divisors (97092940499).

1345242025261 is a wasteful number, since it uses less digits than its factorization.

1345242025261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22705.

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 1345242025261 in words is "one trillion, three hundred forty-five billion, two hundred forty-two million, twenty-five thousand, two hundred sixty-one".