25031525 has 12 divisors (see below), whose sum is σ = 31797444. Its totient is φ = 19536000.

The previous prime is 25031519. The next prime is 25031561. The reversal of 25031525 is 52513052.

It can be written as a sum of positive squares in 6 ways, for example, as 13184161 + 11847364 = 3631^2 + 3442^2 .

It is not a de Polignac number, because 25031525 - 2⁴ = 25031509 is a prime.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25031525.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 11186 + ... + 13235.

It is an arithmetic number, because the mean of its divisors is an integer number (2649787).

Almost surely, 2^25031525 is an apocalyptic number.

25031525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25031525 is a deficient number, since it is larger than the sum of its proper divisors (6765919).

25031525 is a wasteful number, since it uses less digits than its factorization.

25031525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24472 (or 24467 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 25031525 is about 5003.1515068005. The cubic root of 25031525 is about 292.5246284081.

Adding to 25031525 its reverse (52513052), we get a palindrome (77544577).

The spelling of 25031525 in words is "twenty-five million, thirty-one thousand, five hundred twenty-five".