525255431 has 4 divisors (see below), whose sum is σ = 525324264. Its totient is φ = 525186600.

The previous prime is 525255427. The next prime is 525255461. The reversal of 525255431 is 134552525.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 525255431 - 2² = 525255427 is a prime.

It is a super-2 number, since 2×525255431² = 551786535589991522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525255421) 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, 21305 + ... + 38786.

It is an arithmetic number, because the mean of its divisors is an integer number (131331066).

Almost surely, 2^525255431 is an apocalyptic number.

525255431 is a deficient number, since it is larger than the sum of its proper divisors (68833).

525255431 is an equidigital number, since it uses as much as digits as its factorization.

525255431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68832.

The product of its digits is 30000, while the sum is 32.

The square root of 525255431 is about 22918.4517583540. The cubic root of 525255431 is about 806.8451334483.

The spelling of 525255431 in words is "five hundred twenty-five million, two hundred fifty-five thousand, four hundred thirty-one".