25561058 has 8 divisors (see below), whose sum is σ = 38363052. Its totient is φ = 12773376.

The previous prime is 25561057. The next prime is 25561079. The reversal of 25561058 is 85016552.

It can be written as a sum of positive squares in 2 ways, for example, as 18037009 + 7524049 = 4247^2 + 2743^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25561051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5066 + ... + 8762.

Almost surely, 2^25561058 is an apocalyptic number.

25561058 is a deficient number, since it is larger than the sum of its proper divisors (12801994).

25561058 is a wasteful number, since it uses less digits than its factorization.

25561058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7156.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 25561058 is about 5055.7944974059. The cubic root of 25561058 is about 294.5730028491.

The spelling of 25561058 in words is "twenty-five million, five hundred sixty-one thousand, fifty-eight".