25280101 has 16 divisors (see below), whose sum is σ = 31628160. Its totient is φ = 19630080.

The previous prime is 25280081. The next prime is 25280113. The reversal of 25280101 is 10108252.

It is a cyclic number.

It is not a de Polignac number, because 25280101 - 2²¹ = 23182949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25280201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43525 + ... + 44101.

It is an arithmetic number, because the mean of its divisors is an integer number (1976760).

Almost surely, 2^25280101 is an apocalyptic number.

It is an amenable number.

25280101 is a deficient number, since it is larger than the sum of its proper divisors (6348059).

25280101 is a wasteful number, since it uses less digits than its factorization.

25280101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 25280101 is about 5027.9320798913. The cubic root of 25280101 is about 293.4897477040.

Adding to 25280101 its reverse (10108252), we get a palindrome (35388353).

It can be divided in two parts, 25 and 280101, that added together give a triangular number (280126 = T₇₄₈).

The spelling of 25280101 in words is "twenty-five million, two hundred eighty thousand, one hundred one".