2447665925 has 12 divisors (see below), whose sum is σ = 3035968260. Its totient is φ = 1957576320.

The previous prime is 2447665919. The next prime is 2447665939. The reversal of 2447665925 is 5295667442.

It can be written as a sum of positive squares in 6 ways, for example, as 259016836 + 2188649089 = 16094^2 + 46783^2 .

It is not a de Polignac number, because 2447665925 - 2⁸ = 2447665669 is a prime.

It is a super-2 number, since 2×2447665925² = 11982136960812211250, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91481 + ... + 115169.

It is an arithmetic number, because the mean of its divisors is an integer number (252997355).

Almost surely, 2^2447665925 is an apocalyptic number.

2447665925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2447665925 is a deficient number, since it is larger than the sum of its proper divisors (588302335).

2447665925 is a wasteful number, since it uses less digits than its factorization.

2447665925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27832 (or 27827 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 50.

The square root of 2447665925 is about 49473.8913468508. The cubic root of 2447665925 is about 1347.6715096593.

The spelling of 2447665925 in words is "two billion, four hundred forty-seven million, six hundred sixty-five thousand, nine hundred twenty-five".