525745643 has 2 divisors, whose sum is σ = 525745644. Its totient is φ = 525745642.

The previous prime is 525745613. The next prime is 525745657. The reversal of 525745643 is 346547525.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-525745643 is a prime.

It is a super-2 number, since 2×525745643² = 552816962266966898, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 525745643.

It is not a weakly prime, because it can be changed into another prime (525745603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262872821 + 262872822.

It is an arithmetic number, because the mean of its divisors is an integer number (262872822).

Almost surely, 2^525745643 is an apocalyptic number.

525745643 is a deficient number, since it is larger than the sum of its proper divisors (1).

525745643 is an equidigital number, since it uses as much as digits as its factorization.

525745643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504000, while the sum is 41.

The square root of 525745643 is about 22929.1439657044. The cubic root of 525745643 is about 807.0960603697.

The spelling of 525745643 in words is "five hundred twenty-five million, seven hundred forty-five thousand, six hundred forty-three".