2665447425 has 192 divisors, whose sum is σ = 5485363200. Its totient is φ = 1262822400.

The previous prime is 2665447339. The next prime is 2665447427. The reversal of 2665447425 is 5247445662.

2665447425 is a `hidden beast` number, since 2 + 66 + 544 + 7 + 42 + 5 = 666.

It is not a de Polignac number, because 2665447425 - 2¹⁰ = 2665446401 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 (2665447427) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 20987712 + ... + 20987838.

It is an arithmetic number, because the mean of its divisors is an integer number (28569600).

Almost surely, 2^2665447425 is an apocalyptic number.

2665447425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2665447425 is an abundant number, since it is smaller than the sum of its proper divisors (2819915775).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2665447425 is a wasteful number, since it uses less digits than its factorization.

2665447425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 242 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 45.

The square root of 2665447425 is about 51627.9713430617. The cubic root of 2665447425 is about 1386.5111727443.

The spelling of 2665447425 in words is "two billion, six hundred sixty-five million, four hundred forty-seven thousand, four hundred twenty-five".