245747505 has 16 divisors (see below), whose sum is σ = 394015104. Its totient is φ = 130792320.

The previous prime is 245747497. The next prime is 245747507. The reversal of 245747505 is 505747542.

It is not a de Polignac number, because 245747505 - 2³ = 245747497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245747507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9516 + ... + 24125.

It is an arithmetic number, because the mean of its divisors is an integer number (24625944).

Almost surely, 2^245747505 is an apocalyptic number.

It is an amenable number.

245747505 is a deficient number, since it is larger than the sum of its proper divisors (148267599).

245747505 is a wasteful number, since it uses less digits than its factorization.

245747505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34136.

The product of its (nonzero) digits is 196000, while the sum is 39.

The square root of 245747505 is about 15676.3358282476. The cubic root of 245747505 is about 626.3682068969.

The spelling of 245747505 in words is "two hundred forty-five million, seven hundred forty-seven thousand, five hundred five".