2558187225 has 96 divisors (see below), whose sum is σ = 5173776000. Its totient is φ = 1228953600.

The previous prime is 2558187221. The next prime is 2558187293. The reversal of 2558187225 is 5227818552.

2558187225 is a `hidden beast` number, since 2 + 558 + 1 + 8 + 72 + 25 = 666.

It is not a de Polignac number, because 2558187225 - 2² = 2558187221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2558187221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 837501 + ... + 840549.

It is an arithmetic number, because the mean of its divisors is an integer number (53893500).

Almost surely, 2^2558187225 is an apocalyptic number.

2558187225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2558187225 is an abundant number, since it is smaller than the sum of its proper divisors (2615588775).

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

2558187225 is a wasteful number, since it uses less digits than its factorization.

2558187225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3192 (or 3181 counting only the distinct ones).

The product of its digits is 448000, while the sum is 45.

The square root of 2558187225 is about 50578.5253343749. The cubic root of 2558187225 is about 1367.6577850906.

The spelling of 2558187225 in words is "two billion, five hundred fifty-eight million, one hundred eighty-seven thousand, two hundred twenty-five".