525145919 has 2 divisors, whose sum is σ = 525145920. Its totient is φ = 525145918.

The previous prime is 525145909. The next prime is 525145927. The reversal of 525145919 is 919541525.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 525145919 - 2⁴ = 525145903 is a prime.

It is a super-2 number, since 2×525145919² = 551556472484709122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525145909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262572959 + 262572960.

It is an arithmetic number, because the mean of its divisors is an integer number (262572960).

Almost surely, 2^525145919 is an apocalyptic number.

525145919 is a deficient number, since it is larger than the sum of its proper divisors (1).

525145919 is an equidigital number, since it uses as much as digits as its factorization.

525145919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81000, while the sum is 41.

The square root of 525145919 is about 22916.0624671866. The cubic root of 525145919 is about 806.7890557380.

The spelling of 525145919 in words is "five hundred twenty-five million, one hundred forty-five thousand, nine hundred nineteen".