25552503 has 20 divisors (see below), whose sum is σ = 38419920. Its totient is φ = 16924032.

The previous prime is 25552493. The next prime is 25552561. The reversal of 25552503 is 30525552.

It is not a de Polignac number, because 25552503 - 2¹⁸ = 25290359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25552603) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12583 + ... + 14471.

It is an arithmetic number, because the mean of its divisors is an integer number (1920996).

Almost surely, 2^25552503 is an apocalyptic number.

25552503 is a deficient number, since it is larger than the sum of its proper divisors (12867417).

25552503 is a wasteful number, since it uses less digits than its factorization.

25552503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068 (or 2059 counting only the distinct ones).

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

The square root of 25552503 is about 5054.9483676888. The cubic root of 25552503 is about 294.5401357532.

The spelling of 25552503 in words is "twenty-five million, five hundred fifty-two thousand, five hundred three".