64425651 has 4 divisors (see below), whose sum is σ = 85900872. Its totient is φ = 42950432.

The previous prime is 64425629. The next prime is 64425661. The reversal of 64425651 is 15652446.

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 64425651 - 2⁵ = 64425619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64425661) 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, 10737606 + ... + 10737611.

It is an arithmetic number, because the mean of its divisors is an integer number (21475218).

Almost surely, 2^64425651 is an apocalyptic number.

64425651 is a deficient number, since it is larger than the sum of its proper divisors (21475221).

64425651 is a wasteful number, since it uses less digits than its factorization.

64425651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21475220.

The product of its digits is 28800, while the sum is 33.

The square root of 64425651 is about 8026.5591008850. The cubic root of 64425651 is about 400.8848142329.

The spelling of 64425651 in words is "sixty-four million, four hundred twenty-five thousand, six hundred fifty-one".