25232403 has 48 divisors (see below), whose sum is σ = 43338240. Its totient is φ = 12950784.

The previous prime is 25232393. The next prime is 25232413. The reversal of 25232403 is 30423252.

It is an interprime number because it is at equal distance from previous prime (25232393) and next prime (25232413).

It is not a de Polignac number, because 25232403 - 2⁴ = 25232387 is a prime.

It is a super-2 number, since 2×25232403² = 1273348322308818, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 25232403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25232413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57258 + ... + 57696.

It is an arithmetic number, because the mean of its divisors is an integer number (902880).

Almost surely, 2^25232403 is an apocalyptic number.

25232403 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

25232403 is a deficient number, since it is larger than the sum of its proper divisors (18105837).

25232403 is a wasteful number, since it uses less digits than its factorization.

25232403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496 (or 489 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 25232403 is about 5023.1865384435. The cubic root of 25232403 is about 293.3050479211.

Adding to 25232403 its reverse (30423252), we get a palindrome (55655655).

The spelling of 25232403 in words is "twenty-five million, two hundred thirty-two thousand, four hundred three".