64634025 has 48 divisors (see below), whose sum is σ = 113028480. Its totient is φ = 32524800.

The previous prime is 64634021. The next prime is 64634047. The reversal of 64634025 is 52043646.

It is not a de Polignac number, because 64634025 - 2² = 64634021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64633983 and 64634001.

It is not an unprimeable number, because it can be changed into a prime (64634021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 153315 + ... + 153735.

It is an arithmetic number, because the mean of its divisors is an integer number (2354760).

Almost surely, 2^64634025 is an apocalyptic number.

It is an amenable number.

64634025 is a deficient number, since it is larger than the sum of its proper divisors (48394455).

64634025 is a wasteful number, since it uses less digits than its factorization.

64634025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 64634025 is about 8039.5289041087. The cubic root of 64634025 is about 401.3165474198.

The spelling of 64634025 in words is "sixty-four million, six hundred thirty-four thousand, twenty-five".