25525503 has 8 divisors (see below), whose sum is σ = 37815600. Its totient is φ = 17016984.

The previous prime is 25525477. The next prime is 25525529. The reversal of 25525503 is 30552552.

It is an interprime number because it is at equal distance from previous prime (25525477) and next prime (25525529).

It is not a de Polignac number, because 25525503 - 2⁵ = 25525471 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 945389 = 25525503 / (2 + 5 + 5 + 2 + 5 + 5 + 0 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25525553) 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 7 ways as a sum of consecutive naturals, for example, 472668 + ... + 472721.

It is an arithmetic number, because the mean of its divisors is an integer number (4726950).

Almost surely, 2^25525503 is an apocalyptic number.

25525503 is a deficient number, since it is larger than the sum of its proper divisors (12290097).

25525503 is an equidigital number, since it uses as much as digits as its factorization.

25525503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945398 (or 945392 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 25525503 is about 5052.2770114078. The cubic root of 25525503 is about 294.4363574483.

The spelling of 25525503 in words is "twenty-five million, five hundred twenty-five thousand, five hundred three".