257250039 has 8 divisors (see below), whose sum is σ = 354827760. Its totient is φ = 165586176.

The previous prime is 257250017. The next prime is 257250047. The reversal of 257250039 is 930052752.

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

It is not a de Polignac number, because 257250039 - 2⁹ = 257249527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 257249991 and 257250009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257250079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1478362 + ... + 1478535.

It is an arithmetic number, because the mean of its divisors is an integer number (44353470).

Almost surely, 2^257250039 is an apocalyptic number.

257250039 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

257250039 is a deficient number, since it is larger than the sum of its proper divisors (97577721).

257250039 is a wasteful number, since it uses less digits than its factorization.

257250039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2956929.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 257250039 is about 16039.0161481308. The cubic root of 257250039 is about 635.9922396308.

The spelling of 257250039 in words is "two hundred fifty-seven million, two hundred fifty thousand, thirty-nine".