525505251 has 8 divisors (see below), whose sum is σ = 702339664. Its totient is φ = 349503840.

The previous prime is 525505177. The next prime is 525505291. The reversal of 525505251 is 152505525.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 525505251 - 2⁹ = 525504739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (525505291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206776 + ... + 209301.

It is an arithmetic number, because the mean of its divisors is an integer number (87792458).

Almost surely, 2^525505251 is an apocalyptic number.

525505251 is a deficient number, since it is larger than the sum of its proper divisors (176834413).

525505251 is a wasteful number, since it uses less digits than its factorization.

525505251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416501.

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 525505251 is about 22923.9013040974. The cubic root of 525505251 is about 806.9730293835.

The spelling of 525505251 in words is "five hundred twenty-five million, five hundred five thousand, two hundred fifty-one".