655125000505 has 4 divisors (see below), whose sum is σ = 786150000612. Its totient is φ = 524100000400.

The previous prime is 655125000487. The next prime is 655125000533. The reversal of 655125000505 is 505000521556.

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

It can be written as a sum of positive squares in 2 ways, for example, as 521704288681 + 133420711824 = 722291^2 + 365268^2 .

It is not a de Polignac number, because 655125000505 - 2²⁵ = 655091446073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65512500046 + ... + 65512500055.

It is an arithmetic number, because the mean of its divisors is an integer number (196537500153).

Almost surely, 2^655125000505 is an apocalyptic number.

It is an amenable number.

655125000505 is a deficient number, since it is larger than the sum of its proper divisors (131025000107).

655125000505 is a wasteful number, since it uses less digits than its factorization.

655125000505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131025000106.

The product of its (nonzero) digits is 37500, while the sum is 34.

The spelling of 655125000505 in words is "six hundred fifty-five billion, one hundred twenty-five million, five hundred five", and thus it is an aban number.