2405165520 has 80 divisors (see below), whose sum is σ = 7529910912. Its totient is φ = 635020800.

The previous prime is 2405165513. The next prime is 2405165527. The reversal of 2405165520 is 255615042.

It is an interprime number because it is at equal distance from previous prime (2405165513) and next prime (2405165527).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2405165527) 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, 25372 + ... + 73851.

Almost surely, 2^2405165520 is an apocalyptic number.

2405165520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2405165520 is an abundant number, since it is smaller than the sum of its proper divisors (5124745392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2405165520 is a wasteful number, since it uses less digits than its factorization.

2405165520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99340 (or 99334 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 2405165520 is about 49042.4868863723. The cubic root of 2405165520 is about 1339.8257588844.

The spelling of 2405165520 in words is "two billion, four hundred five million, one hundred sixty-five thousand, five hundred twenty".