2558252478 has 8 divisors (see below), whose sum is σ = 5116504968. Its totient is φ = 852750824.

The previous prime is 2558252471. The next prime is 2558252479. The reversal of 2558252478 is 8742528552.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

2558252478 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2558252471) 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, 213187701 + ... + 213187712.

It is an arithmetic number, because the mean of its divisors is an integer number (639563121).

Almost surely, 2^2558252478 is an apocalyptic number.

2558252478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2558252478 is a wasteful number, since it uses less digits than its factorization.

2558252478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426375418.

The product of its digits is 1792000, while the sum is 48.

The square root of 2558252478 is about 50579.1703965180. The cubic root of 2558252478 is about 1367.6694135091.

The spelling of 2558252478 in words is "two billion, five hundred fifty-eight million, two hundred fifty-two thousand, four hundred seventy-eight".