525402403 has 2 divisors, whose sum is σ = 525402404. Its totient is φ = 525402402.

The previous prime is 525402379. The next prime is 525402419. The reversal of 525402403 is 304204525.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 525402403 - 2²⁵ = 491847971 is a prime.

It is not a weakly prime, because it can be changed into another prime (525402433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262701201 + 262701202.

It is an arithmetic number, because the mean of its divisors is an integer number (262701202).

Almost surely, 2^525402403 is an apocalyptic number.

525402403 is a deficient number, since it is larger than the sum of its proper divisors (1).

525402403 is an equidigital number, since it uses as much as digits as its factorization.

525402403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 525402403 is about 22921.6579461434. The cubic root of 525402403 is about 806.9203810183.

Adding to 525402403 its reverse (304204525), we get a palindrome (829606928).

The spelling of 525402403 in words is "five hundred twenty-five million, four hundred two thousand, four hundred three".