525545064 has 128 divisors (see below), whose sum is σ = 1599523200. Its totient is φ = 158561280.

The previous prime is 525545063. The next prime is 525545131. The reversal of 525545064 is 460545525.

525545064 is a `hidden beast` number, since 52 + 5 + 545 + 0 + 64 = 666.

It is a super-2 number, since 2×525545064² = 552395228589528192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (525545063) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 885952 + ... + 886544.

It is an arithmetic number, because the mean of its divisors is an integer number (12496275).

Almost surely, 2^525545064 is an apocalyptic number.

525545064 is a gapful number since it is divisible by the number (54) 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 525545064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (799761600).

525545064 is an abundant number, since it is smaller than the sum of its proper divisors (1073978136).

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

525545064 is a wasteful number, since it uses less digits than its factorization.

525545064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992 (or 982 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The square root of 525545064 is about 22924.7696607839. The cubic root of 525545064 is about 806.9934079975.

The spelling of 525545064 in words is "five hundred twenty-five million, five hundred forty-five thousand, sixty-four".