64553525 has 24 divisors (see below), whose sum is σ = 84262464. Its totient is φ = 48963200.

The previous prime is 64553521. The next prime is 64553527. The reversal of 64553525 is 52535546.

It is not a de Polignac number, because 64553525 - 2² = 64553521 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64553521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74897 + ... + 75753.

It is an arithmetic number, because the mean of its divisors is an integer number (3510936).

Almost surely, 2^64553525 is an apocalyptic number.

It is an amenable number.

64553525 is a deficient number, since it is larger than the sum of its proper divisors (19708939).

64553525 is a wasteful number, since it uses less digits than its factorization.

64553525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021 (or 1016 counting only the distinct ones).

The product of its digits is 90000, while the sum is 35.

The square root of 64553525 is about 8034.5208320098. The cubic root of 64553525 is about 401.1498684225.

The spelling of 64553525 in words is "sixty-four million, five hundred fifty-three thousand, five hundred twenty-five".