525890819 has 2 divisors, whose sum is σ = 525890820. Its totient is φ = 525890818.

The previous prime is 525890779. The next prime is 525890899. The reversal of 525890819 is 918098525.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 525890819 - 2²⁰ = 524842243 is a prime.

It is a super-2 number, since 2×525890819² = 553122307016981522, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (525890899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262945409 + 262945410.

It is an arithmetic number, because the mean of its divisors is an integer number (262945410).

Almost surely, 2^525890819 is an apocalyptic number.

525890819 is a deficient number, since it is larger than the sum of its proper divisors (1).

525890819 is an equidigital number, since it uses as much as digits as its factorization.

525890819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 47.

The square root of 525890819 is about 22932.3094999174. The cubic root of 525890819 is about 807.1703422941.

The spelling of 525890819 in words is "five hundred twenty-five million, eight hundred ninety thousand, eight hundred nineteen".