2525665716 has 144 divisors (see below), whose sum is σ = 7590430848. Its totient is φ = 693100800.

The previous prime is 2525665699. The next prime is 2525665717. The reversal of 2525665716 is 6175665252.

2525665716 is a `hidden beast` number, since 2 + 525 + 66 + 57 + 16 = 666.

It is a super-3 number, since 3×2525665716³ (a number of 29 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2525665717) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 659086 + ... + 662906.

Almost surely, 2^2525665716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2525665716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3795215424).

2525665716 is an abundant number, since it is smaller than the sum of its proper divisors (5064765132).

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

2525665716 is a wasteful number, since it uses less digits than its factorization.

2525665716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3942 (or 3937 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The square root of 2525665716 is about 50256.0017908309. The cubic root of 2525665716 is about 1361.8375025268.

The spelling of 2525665716 in words is "two billion, five hundred twenty-five million, six hundred sixty-five thousand, seven hundred sixteen".