505513925 has 12 divisors (see below), whose sum is σ = 716385696. Its totient is φ = 346638000.

The previous prime is 505513913. The next prime is 505513927. The reversal of 505513925 is 529315505.

It is not a de Polignac number, because 505513925 - 2⁴ = 505513909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505513927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1444151 + ... + 1444500.

It is an arithmetic number, because the mean of its divisors is an integer number (59698808).

Almost surely, 2^505513925 is an apocalyptic number.

It is an amenable number.

505513925 is a deficient number, since it is larger than the sum of its proper divisors (210871771).

505513925 is a wasteful number, since it uses less digits than its factorization.

505513925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888668 (or 2888663 counting only the distinct ones).

The product of its (nonzero) digits is 33750, while the sum is 35.

The square root of 505513925 is about 22483.6368277021. The cubic root of 505513925 is about 796.6074696964.

The spelling of 505513925 in words is "five hundred five million, five hundred thirteen thousand, nine hundred twenty-five".