3618155601025 has 27 divisors (see below), whose sum is σ = 5219100887619. Its totient is φ = 2480975332080.

The previous prime is 3618155601013. The next prime is 3618155601037. The reversal of 3618155601025 is 5201065518163.

The square root of 3618155601025 is 1902145.

It is a perfect power (a square), and thus also a powerful number.

3618155601025 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3618155601013) and next prime (3618155601037).

It can be written as a sum of positive squares in only one way, i.e., 1302536016369 + 2315619584656 = 1141287^2 + 1521716^2 .

It is not a de Polignac number, because 3618155601025 - 2⁵ = 3618155600993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 66547902 + ... + 66602248.

Almost surely, 2^{3618155601025} is an apocalyptic number.

3618155601025 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3618155601025 is the 1902145-th square number.

3618155601025 is the 951073-rd centered octagonal number.

It is an amenable number.

3618155601025 is a deficient number, since it is larger than the sum of its proper divisors (1600945286594).

3618155601025 is an frugal number, since it uses more digits than its factorization.

3618155601025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108718 (or 54359 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 43.

The spelling of 3618155601025 in words is "three trillion, six hundred eighteen billion, one hundred fifty-five million, six hundred one thousand, twenty-five".