25755993 has 6 divisors (see below), whose sum is σ = 37203114. Its totient is φ = 17170656.

The previous prime is 25755949. The next prime is 25755997. The reversal of 25755993 is 39955752.

25755993 is a `hidden beast` number, since 2 + 5 + 7 + 559 + 93 = 666.

It can be written as a sum of positive squares in only one way, i.e., 25522704 + 233289 = 5052^2 + 483^2 .

It is not a de Polignac number, because 25755993 - 2¹⁰ = 25754969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25755997) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1430880 + ... + 1430897.

It is an arithmetic number, because the mean of its divisors is an integer number (6200519).

Almost surely, 2^25755993 is an apocalyptic number.

It is an amenable number.

25755993 is a deficient number, since it is larger than the sum of its proper divisors (11447121).

25755993 is a wasteful number, since it uses less digits than its factorization.

25755993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2861783 (or 2861780 counting only the distinct ones).

The product of its digits is 425250, while the sum is 45.

The square root of 25755993 is about 5075.0362560281. The cubic root of 25755993 is about 295.3199363375.

The spelling of 25755993 in words is "twenty-five million, seven hundred fifty-five thousand, nine hundred ninety-three".