2239655625 has 45 divisors (see below), whose sum is σ = 4048945329. Its totient is φ = 1192590000.

The previous prime is 2239655623. The next prime is 2239655629. The reversal of 2239655625 is 5265569322.

The square root of 2239655625 is 47325.

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

2239655625 is a `hidden beast` number, since 2 + 2 + 3 + 96 + 556 + 2 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 175589001 + 2064066624 = 13251^2 + 45432^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 2239655625 - 2¹ = 2239655623 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2239655623) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 3549060 + ... + 3549690.

Almost surely, 2^2239655625 is an apocalyptic number.

2239655625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2239655625 is the 47325-th square number.

2239655625 is the 23663-rd centered octagonal number.

It is an amenable number.

2239655625 is a deficient number, since it is larger than the sum of its proper divisors (1809289704).

2239655625 is an frugal number, since it uses more digits than its factorization.

2239655625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288 (or 639 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

The cubic root of 2239655625 is about 1308.3594686473.

The spelling of 2239655625 in words is "two billion, two hundred thirty-nine million, six hundred fifty-five thousand, six hundred twenty-five".