2619904225 has 27 divisors (see below), whose sum is σ = 3374125963. Its totient is φ = 2017917440.

The previous prime is 2619904163. The next prime is 2619904237. The reversal of 2619904225 is 5224099162.

The square root of 2619904225 is 51185.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 1848398049 + 771506176 = 42993^2 + 27776^2 .

It is not a de Polignac number, because 2619904225 - 2¹⁷ = 2619773153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 7421649 + ... + 7422001.

Almost surely, 2^2619904225 is an apocalyptic number.

2619904225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2619904225 is the 51185-th square number.

2619904225 is the 25593-rd centered octagonal number.

It is an amenable number.

2619904225 is a deficient number, since it is larger than the sum of its proper divisors (754221738).

2619904225 is an frugal number, since it uses more digits than its factorization.

2619904225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The cubic root of 2619904225 is about 1378.5688841328.

The spelling of 2619904225 in words is "two billion, six hundred nineteen million, nine hundred four thousand, two hundred twenty-five".