125003536665 has 48 divisors (see below), whose sum is σ = 233274041280. Its totient is φ = 56993569920.

The previous prime is 125003536661. The next prime is 125003536711. The reversal of 125003536665 is 566635300521.

It is not a de Polignac number, because 125003536665 - 2² = 125003536661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125003536661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54195 + ... + 502935.

It is an arithmetic number, because the mean of its divisors is an integer number (4859875860).

Almost surely, 2^125003536665 is an apocalyptic number.

125003536665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125003536665 is a deficient number, since it is larger than the sum of its proper divisors (108270504615).

125003536665 is a wasteful number, since it uses less digits than its factorization.

125003536665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449142 (or 449135 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 42.

The spelling of 125003536665 in words is "one hundred twenty-five billion, three million, five hundred thirty-six thousand, six hundred sixty-five".