525255197 has 4 divisors (see below), whose sum is σ = 525301980. Its totient is φ = 525208416.

The previous prime is 525255193. The next prime is 525255251. The reversal of 525255197 is 791552525.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 234518596 + 290736601 = 15314^2 + 17051^2 .

It is a cyclic number.

It is not a de Polignac number, because 525255197 - 2² = 525255193 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525255193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4679 + ... + 32747.

It is an arithmetic number, because the mean of its divisors is an integer number (131325495).

It is a Poulet number, since it divides 2^525255196-1.

Almost surely, 2^525255197 is an apocalyptic number.

525255197 is the 18713-rd pentagonal number.

It is an amenable number.

525255197 is a deficient number, since it is larger than the sum of its proper divisors (46783).

525255197 is a wasteful number, since it uses less digits than its factorization.

525255197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46782.

The product of its digits is 157500, while the sum is 41.

The square root of 525255197 is about 22918.4466532966. The cubic root of 525255197 is about 806.8450136325.

The spelling of 525255197 in words is "five hundred twenty-five million, two hundred fifty-five thousand, one hundred ninety-seven".