258378425 has 6 divisors (see below), whose sum is σ = 320389278. Its totient is φ = 206702720.

The previous prime is 258378409. The next prime is 258378431. The reversal of 258378425 is 524873852.

It can be written as a sum of positive squares in 3 ways, for example, as 38241856 + 220136569 = 6184^2 + 14837^2 .

It is not a de Polignac number, because 258378425 - 2⁴ = 258378409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5167544 + ... + 5167593.

It is an arithmetic number, because the mean of its divisors is an integer number (53398213).

Almost surely, 2^258378425 is an apocalyptic number.

258378425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

258378425 is a deficient number, since it is larger than the sum of its proper divisors (62010853).

258378425 is a wasteful number, since it uses less digits than its factorization.

258378425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10335147 (or 10335142 counting only the distinct ones).

The product of its digits is 537600, while the sum is 44.

The square root of 258378425 is about 16074.1539435206. The cubic root of 258378425 is about 636.9207759474.

The spelling of 258378425 in words is "two hundred fifty-eight million, three hundred seventy-eight thousand, four hundred twenty-five".