25435664 has 20 divisors (see below), whose sum is σ = 49369980. Its totient is φ = 12695040.

The previous prime is 25435651. The next prime is 25435673. The reversal of 25435664 is 46653452.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8952064 + 16483600 = 2992^2 + 4060^2 .

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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11132 + ... + 13220.

It is an arithmetic number, because the mean of its divisors is an integer number (2468499).

Almost surely, 2^25435664 is an apocalyptic number.

It is an amenable number.

25435664 is a deficient number, since it is larger than the sum of its proper divisors (23934316).

25435664 is a wasteful number, since it uses less digits than its factorization.

25435664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2858 (or 2852 counting only the distinct ones).

The product of its digits is 86400, while the sum is 35.

The square root of 25435664 is about 5043.3782328911. The cubic root of 25435664 is about 294.0905208175.

The spelling of 25435664 in words is "twenty-five million, four hundred thirty-five thousand, six hundred sixty-four".