25125501 has 16 divisors (see below), whose sum is σ = 34171200. Its totient is φ = 16418688.

The previous prime is 25125491. The next prime is 25125523. The reversal of 25125501 is 10552152.

It is a de Polignac number, because none of the positive numbers 2^k-25125501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25125301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36775 + ... + 37451.

It is an arithmetic number, because the mean of its divisors is an integer number (2135700).

Almost surely, 2^25125501 is an apocalyptic number.

It is an amenable number.

25125501 is a deficient number, since it is larger than the sum of its proper divisors (9045699).

25125501 is a wasteful number, since it uses less digits than its factorization.

25125501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 25125501 is about 5012.5343889095. The cubic root of 25125501 is about 292.8902468796.

Adding to 25125501 its reverse (10552152), we get a palindrome (35677653).

It can be divided in two parts, 251 and 25501, that added together give a palindrome (25752).

The spelling of 25125501 in words is "twenty-five million, one hundred twenty-five thousand, five hundred one".