245765505 has 32 divisors (see below), whose sum is σ = 404901504. Its totient is φ = 127236096.

The previous prime is 245765497. The next prime is 245765537. The reversal of 245765505 is 505567542.

It is not a de Polignac number, because 245765505 - 2³ = 245765497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75522 + ... + 78708.

It is an arithmetic number, because the mean of its divisors is an integer number (12653172).

Almost surely, 2^245765505 is an apocalyptic number.

It is an amenable number.

245765505 is a deficient number, since it is larger than the sum of its proper divisors (159135999).

245765505 is a wasteful number, since it uses less digits than its factorization.

245765505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3345.

The product of its (nonzero) digits is 210000, while the sum is 39.

The square root of 245765505 is about 15676.9099314884. The cubic root of 245765505 is about 626.3834994936.

The spelling of 245765505 in words is "two hundred forty-five million, seven hundred sixty-five thousand, five hundred five".