525017780057 has 4 divisors (see below), whose sum is σ = 525148809216. Its totient is φ = 524886750900.

The previous prime is 525017780039. The next prime is 525017780087. The reversal of 525017780057 is 750087710525.

It is a happy number.

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 525017780057 - 2²⁸ = 524749344601 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 525017779993 and 525017780020.

It is not an unprimeable number, because it can be changed into a prime (525017780017) 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, 65508569 + ... + 65516582.

It is an arithmetic number, because the mean of its divisors is an integer number (131287202304).

Almost surely, 2^525017780057 is an apocalyptic number.

It is an amenable number.

525017780057 is a deficient number, since it is larger than the sum of its proper divisors (131029159).

525017780057 is a wasteful number, since it uses less digits than its factorization.

525017780057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131029158.

The product of its (nonzero) digits is 686000, while the sum is 47.

The spelling of 525017780057 in words is "five hundred twenty-five billion, seventeen million, seven hundred eighty thousand, fifty-seven".