25775538 has 8 divisors (see below), whose sum is σ = 51551088. Its totient is φ = 8591844.

The previous prime is 25775527. The next prime is 25775573. The reversal of 25775538 is 83557752.

It is a sphenic number, since it is the product of 3 distinct primes.

25775538 is an admirable number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25775538.

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, 2147956 + ... + 2147967.

It is an arithmetic number, because the mean of its divisors is an integer number (6443886).

Almost surely, 2^25775538 is an apocalyptic number.

25775538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25775538 is a wasteful number, since it uses less digits than its factorization.

25775538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4295928.

The product of its digits is 294000, while the sum is 42.

The square root of 25775538 is about 5076.9614928617. The cubic root of 25775538 is about 295.3946188749.

The spelling of 25775538 in words is "twenty-five million, seven hundred seventy-five thousand, five hundred thirty-eight".