25757525 has 12 divisors (see below), whose sum is σ = 32258724. Its totient is φ = 20402000.

The previous prime is 25757509. The next prime is 25757527. The reversal of 25757525 is 52575752.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 6 ways, for example, as 2937796 + 22819729 = 1714^2 + 4777^2 .

It is not a de Polignac number, because 25757525 - 2⁴ = 25757509 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 (25757527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 254975 + ... + 255075.

It is an arithmetic number, because the mean of its divisors is an integer number (2688227).

Almost surely, 2^25757525 is an apocalyptic number.

25757525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25757525 is a deficient number, since it is larger than the sum of its proper divisors (6501199).

25757525 is an frugal number, since it uses more digits than its factorization.

25757525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313 (or 106 counting only the distinct ones).

The product of its digits is 122500, while the sum is 38.

The square root of 25757525 is about 5075.1871886660. The cubic root of 25757525 is about 295.3257915595.

The spelling of 25757525 in words is "twenty-five million, seven hundred fifty-seven thousand, five hundred twenty-five".