25216403 has 2 divisors, whose sum is σ = 25216404. Its totient is φ = 25216402.

The previous prime is 25216397. The next prime is 25216409. The reversal of 25216403 is 30461252.

It is a balanced prime because it is at equal distance from previous prime (25216397) and next prime (25216409).

It is a cyclic number.

It is not a de Polignac number, because 25216403 - 2¹² = 25212307 is a prime.

It is not a weakly prime, because it can be changed into another prime (25216409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12608201 + 12608202.

It is an arithmetic number, because the mean of its divisors is an integer number (12608202).

Almost surely, 2^25216403 is an apocalyptic number.

25216403 is a deficient number, since it is larger than the sum of its proper divisors (1).

25216403 is an equidigital number, since it uses as much as digits as its factorization.

25216403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 25216403 is about 5021.5936713358. The cubic root of 25216403 is about 293.2430393860.

Adding to 25216403 its reverse (30461252), we get a palindrome (55677655).

The spelling of 25216403 in words is "twenty-five million, two hundred sixteen thousand, four hundred three".