525156481 has 4 divisors (see below), whose sum is σ = 525222832. Its totient is φ = 525090132.

The previous prime is 525156479. The next prime is 525156491. The reversal of 525156481 is 184651525.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 525156481 - 2¹ = 525156479 is a prime.

It is a super-2 number, since 2×525156481² = 551578659072606722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 525156481.

It is not an unprimeable number, because it can be changed into a prime (525156491) 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, 19395 + ... + 37768.

It is an arithmetic number, because the mean of its divisors is an integer number (131305708).

Almost surely, 2^525156481 is an apocalyptic number.

It is an amenable number.

525156481 is a deficient number, since it is larger than the sum of its proper divisors (66351).

525156481 is an equidigital number, since it uses as much as digits as its factorization.

525156481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66350.

The product of its digits is 48000, while the sum is 37.

The square root of 525156481 is about 22916.2929157401. The cubic root of 525156481 is about 806.7944645514.

It can be divided in two parts, 52515 and 6481, that added together give a triangular number (58996 = T₃₄₃).

The spelling of 525156481 in words is "five hundred twenty-five million, one hundred fifty-six thousand, four hundred eighty-one".