25550493 has 16 divisors (see below), whose sum is σ = 35683200. Its totient is φ = 16231424.

The previous prime is 25550491. The next prime is 25550501. The reversal of 25550493 is 39405552.

It is a cyclic number.

It is not a de Polignac number, because 25550493 - 2¹ = 25550491 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25550491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23833 + ... + 24881.

It is an arithmetic number, because the mean of its divisors is an integer number (2230200).

Almost surely, 2^25550493 is an apocalyptic number.

25550493 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

25550493 is a deficient number, since it is larger than the sum of its proper divisors (10132707).

25550493 is a wasteful number, since it uses less digits than its factorization.

25550493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 25550493 is about 5054.7495486918. The cubic root of 25550493 is about 294.5324125542.

Adding to 25550493 its sum of digits (33), we get a triangular number (25550526 = T₇₁₄₈).

The spelling of 25550493 in words is "twenty-five million, five hundred fifty thousand, four hundred ninety-three".