2220655625 has 10 divisors (see below), whose sum is σ = 2774932050. Its totient is φ = 1776524000.

The previous prime is 2220655597. The next prime is 2220655673. The reversal of 2220655625 is 5265560222.

It can be written as a sum of positive squares in 5 ways, for example, as 1092434704 + 1128220921 = 33052^2 + 33589^2 .

It is not a de Polignac number, because 2220655625 - 2⁸ = 2220655369 is a prime.

It is a super-2 number, since 2×2220655625² = 9862622809688281250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1775900 + ... + 1777149.

It is an arithmetic number, because the mean of its divisors is an integer number (277493205).

Almost surely, 2^2220655625 is an apocalyptic number.

2220655625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2220655625 is a deficient number, since it is larger than the sum of its proper divisors (554276425).

2220655625 is an frugal number, since it uses more digits than its factorization.

2220655625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3553069 (or 3553054 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 2220655625 is about 47123.8328767939. The cubic root of 2220655625 is about 1304.6491572630.

The spelling of 2220655625 in words is "two billion, two hundred twenty million, six hundred fifty-five thousand, six hundred twenty-five".