1361311025 has 24 divisors (see below), whose sum is σ = 1722505824. Its totient is φ = 1066982400.

The previous prime is 1361311019. The next prime is 1361311037. The reversal of 1361311025 is 5201131631.

It is not a de Polignac number, because 1361311025 - 2¹² = 1361306929 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 321170 + ... + 325380.

It is an arithmetic number, because the mean of its divisors is an integer number (71771076).

Almost surely, 2^1361311025 is an apocalyptic number.

It is an amenable number.

1361311025 is a deficient number, since it is larger than the sum of its proper divisors (361194799).

1361311025 is a wasteful number, since it uses less digits than its factorization.

1361311025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4481 (or 4476 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1361311025 is about 36895.9486258315. The cubic root of 1361311025 is about 1108.2875483125.

Adding to 1361311025 its reverse (5201131631), we get a palindrome (6562442656).

The spelling of 1361311025 in words is "one billion, three hundred sixty-one million, three hundred eleven thousand, twenty-five".