4015220500 has 24 divisors (see below), whose sum is σ = 8769242664. Its totient is φ = 1606088000.

The previous prime is 4015220477. The next prime is 4015220513. The reversal of 4015220500 is 50225104.

It can be written as a sum of positive squares in 4 ways, for example, as 890186896 + 3125033604 = 29836^2 + 55902^2 .

It is a super-2 number, since 2×4015220500² = 32243991327240500000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4014721 + ... + 4015720.

It is an arithmetic number, because the mean of its divisors is an integer number (365385111).

Almost surely, 2^4015220500 is an apocalyptic number.

It is an amenable number.

4015220500 is an abundant number, since it is smaller than the sum of its proper divisors (4754022164).

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

4015220500 is a wasteful number, since it uses less digits than its factorization.

4015220500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8030460 (or 8030448 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 4015220500 is about 63365.7675720890. The cubic root of 4015220500 is about 1589.4119233910.

Adding to 4015220500 its reverse (50225104), we get a palindrome (4065445604).

The spelling of 4015220500 in words is "four billion, fifteen million, two hundred twenty thousand, five hundred".