1361263466525 has 12 divisors (see below), whose sum is σ = 1688687816244. Its totient is φ = 1088545536000.

The previous prime is 1361263466509. The next prime is 1361263466539. The reversal of 1361263466525 is 5256643621631.

It can be written as a sum of positive squares in 6 ways, for example, as 125910841 + 1361137555684 = 11221^2 + 1166678^2 .

It is not a de Polignac number, because 1361263466525 - 2⁴ = 1361263466509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11571236 + ... + 11688285.

It is an arithmetic number, because the mean of its divisors is an integer number (140723984687).

Almost surely, 2^{1361263466525} is an apocalyptic number.

It is an amenable number.

1361263466525 is a deficient number, since it is larger than the sum of its proper divisors (327424349719).

1361263466525 is a wasteful number, since it uses less digits than its factorization.

1361263466525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23261872 (or 23261867 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 50.

The spelling of 1361263466525 in words is "one trillion, three hundred sixty-one billion, two hundred sixty-three million, four hundred sixty-six thousand, five hundred twenty-five".