25721058 has 16 divisors (see below), whose sum is σ = 56118816. Its totient is φ = 7794240.

The previous prime is 25721027. The next prime is 25721071. The reversal of 25721058 is 85012752.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 194791 + ... + 194922.

It is an arithmetic number, because the mean of its divisors is an integer number (3507426).

Almost surely, 2^25721058 is an apocalyptic number.

25721058 is an abundant number, since it is smaller than the sum of its proper divisors (30397758).

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

25721058 is a wasteful number, since it uses less digits than its factorization.

25721058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389729.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 25721058 is about 5071.5932407874. The cubic root of 25721058 is about 295.1863535748.

The spelling of 25721058 in words is "twenty-five million, seven hundred twenty-one thousand, fifty-eight".