2500667651 has 4 divisors (see below), whose sum is σ = 2586897600. Its totient is φ = 2414437704.

The previous prime is 2500667647. The next prime is 2500667671. The reversal of 2500667651 is 1567660052.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2500667651 - 2² = 2500667647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2500667671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43114931 + ... + 43114988.

It is an arithmetic number, because the mean of its divisors is an integer number (646724400).

Almost surely, 2^2500667651 is an apocalyptic number.

2500667651 is a deficient number, since it is larger than the sum of its proper divisors (86229949).

2500667651 is an equidigital number, since it uses as much as digits as its factorization.

2500667651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86229948.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 2500667651 is about 50006.6760643017. The cubic root of 2500667651 is about 1357.3296164528.

The spelling of 2500667651 in words is "two billion, five hundred million, six hundred sixty-seven thousand, six hundred fifty-one".