1361204525 has 12 divisors (see below), whose sum is σ = 1692115284. Its totient is φ = 1086240000.

The previous prime is 1361204483. The next prime is 1361204531. The reversal of 1361204525 is 5254021631.

It can be written as a sum of positive squares in 6 ways, for example, as 39300361 + 1321904164 = 6269^2 + 36358^2 .

It is not a de Polignac number, because 1361204525 - 2¹⁸ = 1360942381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57866 + ... + 77915.

It is an arithmetic number, because the mean of its divisors is an integer number (141009607).

Almost surely, 2^1361204525 is an apocalyptic number.

It is an amenable number.

1361204525 is a deficient number, since it is larger than the sum of its proper divisors (330910759).

1361204525 is a wasteful number, since it uses less digits than its factorization.

1361204525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136192 (or 136187 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1361204525 is about 36894.5053497130. The cubic root of 1361204525 is about 1108.2586458550.

The spelling of 1361204525 in words is "one billion, three hundred sixty-one million, two hundred four thousand, five hundred twenty-five".