2545401667 has 2 divisors, whose sum is σ = 2545401668. Its totient is φ = 2545401666.

The previous prime is 2545401629. The next prime is 2545401673. The reversal of 2545401667 is 7661045452.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2545401667 - 2⁷ = 2545401539 is a prime.

It is not a weakly prime, because it can be changed into another prime (2545401767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272700833 + 1272700834.

It is an arithmetic number, because the mean of its divisors is an integer number (1272700834).

Almost surely, 2^2545401667 is an apocalyptic number.

2545401667 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545401667 is an equidigital number, since it uses as much as digits as its factorization.

2545401667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 2545401667 is about 50451.9738662423. The cubic root of 2545401667 is about 1365.3755074361.

The spelling of 2545401667 in words is "two billion, five hundred forty-five million, four hundred one thousand, six hundred sixty-seven".