64825451 has 2 divisors, whose sum is σ = 64825452. Its totient is φ = 64825450.

The previous prime is 64825447. The next prime is 64825459. The reversal of 64825451 is 15452846.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64825451 - 2² = 64825447 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (64825459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32412725 + 32412726.

It is an arithmetic number, because the mean of its divisors is an integer number (32412726).

Almost surely, 2^64825451 is an apocalyptic number.

64825451 is a deficient number, since it is larger than the sum of its proper divisors (1).

64825451 is an equidigital number, since it uses as much as digits as its factorization.

64825451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38400, while the sum is 35.

The square root of 64825451 is about 8051.4254017534. The cubic root of 64825451 is about 401.7123487774.

The spelling of 64825451 in words is "sixty-four million, eight hundred twenty-five thousand, four hundred fifty-one".