2500667646 has 32 divisors (see below), whose sum is σ = 5059093248. Its totient is φ = 823979520.

The previous prime is 2500667629. The next prime is 2500667647. The reversal of 2500667646 is 6467660052.

2500667646 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2500667598 and 2500667607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2500667647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200670 + ... + 212766.

It is an arithmetic number, because the mean of its divisors is an integer number (158096664).

Almost surely, 2^2500667646 is an apocalyptic number.

2500667646 is an abundant number, since it is smaller than the sum of its proper divisors (2558425602).

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

2500667646 is a wasteful number, since it uses less digits than its factorization.

2500667646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12496.

The product of its (nonzero) digits is 362880, while the sum is 42.

The square root of 2500667646 is about 50006.6760143083. The cubic root of 2500667646 is about 1357.3296155482.

The spelling of 2500667646 in words is "two billion, five hundred million, six hundred sixty-seven thousand, six hundred forty-six".