1361259825 has 24 divisors (see below), whose sum is σ = 2298507648. Its totient is φ = 710556480.

The previous prime is 1361259803. The next prime is 1361259827. The reversal of 1361259825 is 5289521631.

It is not a de Polignac number, because 1361259825 - 2⁵ = 1361259793 is a prime.

It is a super-2 number, since 2×1361259825² = 3706056622318061250, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1361259827) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 189562 + ... + 196611.

It is an arithmetic number, because the mean of its divisors is an integer number (95771152).

Almost surely, 2^1361259825 is an apocalyptic number.

1361259825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1361259825 is a deficient number, since it is larger than the sum of its proper divisors (937247823).

1361259825 is a wasteful number, since it uses less digits than its factorization.

1361259825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386233 (or 386228 counting only the distinct ones).

The product of its digits is 129600, while the sum is 42.

The square root of 1361259825 is about 36895.2547761904. The cubic root of 1361259825 is about 1108.2736536103.

It can be divided in two parts, 13612 and 59825, that added together give a palindrome (73437).

The spelling of 1361259825 in words is "one billion, three hundred sixty-one million, two hundred fifty-nine thousand, eight hundred twenty-five".