64525020 has 96 divisors (see below), whose sum is σ = 209653248. Its totient is φ = 14522112.

The previous prime is 64524991. The next prime is 64525037. The reversal of 64525020 is 2052546.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26994 + ... + 29286.

It is an arithmetic number, because the mean of its divisors is an integer number (2183888).

Almost surely, 2^64525020 is an apocalyptic number.

64525020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64525020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104826624).

64525020 is an abundant number, since it is smaller than the sum of its proper divisors (145128228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64525020 is a wasteful number, since it uses less digits than its factorization.

64525020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2379 (or 2377 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 64525020 is about 8032.7467282369. The cubic root of 64525020 is about 401.0908142732.

Adding to 64525020 its reverse (2052546), we get a palindrome (66577566).

The spelling of 64525020 in words is "sixty-four million, five hundred twenty-five thousand, twenty".