2225817381 has 4 divisors (see below), whose sum is σ = 2967756512. Its totient is φ = 1483878252.

The previous prime is 2225817371. The next prime is 2225817383. The reversal of 2225817381 is 1837185222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2225817381 - 2¹⁰ = 2225816357 is a prime.

It is a super-2 number, since 2×2225817381² = 9908526027123398322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2225817383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370969561 + ... + 370969566.

It is an arithmetic number, because the mean of its divisors is an integer number (741939128).

Almost surely, 2^2225817381 is an apocalyptic number.

It is an amenable number.

2225817381 is a deficient number, since it is larger than the sum of its proper divisors (741939131).

2225817381 is an equidigital number, since it uses as much as digits as its factorization.

2225817381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741939130.

The product of its digits is 53760, while the sum is 39.

The square root of 2225817381 is about 47178.5690859738. The cubic root of 2225817381 is about 1305.6592297662.

The spelling of 2225817381 in words is "two billion, two hundred twenty-five million, eight hundred seventeen thousand, three hundred eighty-one".