2258778522 has 128 divisors (see below), whose sum is σ = 6152122368. Its totient is φ = 533836800.

The previous prime is 2258778521. The next prime is 2258778523.

2258778522 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (2258778521) and next prime (2258778523).

It is a super-2 number, since 2×2258778522² = 10204160822897008968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2258778521) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 423778 + ... + 429074.

It is an arithmetic number, because the mean of its divisors is an integer number (48063456).

Almost surely, 2^2258778522 is an apocalyptic number.

2258778522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2258778522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3076061184).

2258778522 is an abundant number, since it is smaller than the sum of its proper divisors (3893343846).

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

2258778522 is a wasteful number, since it uses less digits than its factorization.

2258778522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5404.

The product of its digits is 1254400, while the sum is 48.

The square root of 2258778522 is about 47526.6085682536. The cubic root of 2258778522 is about 1312.0726512199.

The spelling of 2258778522 in words is "two billion, two hundred fifty-eight million, seven hundred seventy-eight thousand, five hundred twenty-two".