25505064 has 128 divisors (see below), whose sum is σ = 79027200. Its totient is φ = 7568640.

The previous prime is 25505059. The next prime is 25505093. The reversal of 25505064 is 46050552.

25505064 is a `hidden beast` number, since 2 + 550 + 50 + 64 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 86902 + ... + 87194.

It is an arithmetic number, because the mean of its divisors is an integer number (617400).

Almost surely, 2^25505064 is an apocalyptic number.

25505064 is a gapful number since it is divisible by the number (24) 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 25505064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39513600).

25505064 is an abundant number, since it is smaller than the sum of its proper divisors (53522136).

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

25505064 is a wasteful number, since it uses less digits than its factorization.

25505064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 25505064 is about 5050.2538550057. The cubic root of 25505064 is about 294.3577485935.

The spelling of 25505064 in words is "twenty-five million, five hundred five thousand, sixty-four".