3661361125 has 8 divisors (see below), whose sum is σ = 4569378840. Its totient is φ = 2929088800.

The previous prime is 3661361117. The next prime is 3661361149. The reversal of 3661361125 is 5211631663.

It can be written as a sum of positive squares in 4 ways, for example, as 245893761 + 3415467364 = 15681^2 + 58442^2 .

It is not a de Polignac number, because 3661361125 - 2³ = 3661361117 is a prime.

It is a super-2 number, since 2×3661361125² = 26811130575322531250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14645320 + ... + 14645569.

It is an arithmetic number, because the mean of its divisors is an integer number (571172355).

Almost surely, 2^3661361125 is an apocalyptic number.

It is an amenable number.

3661361125 is a deficient number, since it is larger than the sum of its proper divisors (908017715).

3661361125 is an equidigital number, since it uses as much as digits as its factorization.

3661361125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29290904 (or 29290894 counting only the distinct ones).

The product of its digits is 19440, while the sum is 34.

The square root of 3661361125 is about 60509.1821544466. The cubic root of 3661361125 is about 1541.2775597825.

Adding to 3661361125 its reverse (5211631663), we get a palindrome (8872992788).

The spelling of 3661361125 in words is "three billion, six hundred sixty-one million, three hundred sixty-one thousand, one hundred twenty-five".