257212955 has 8 divisors (see below), whose sum is σ = 308770704. Its totient is φ = 205693600.

The previous prime is 257212877. The next prime is 257212957. The reversal of 257212955 is 559212752.

257212955 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 257212955 - 2¹⁰ = 257211931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (257212957) 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, 8120 + ... + 24090.

It is an arithmetic number, because the mean of its divisors is an integer number (38596338).

Almost surely, 2^257212955 is an apocalyptic number.

257212955 is a deficient number, since it is larger than the sum of its proper divisors (51557749).

257212955 is a wasteful number, since it uses less digits than its factorization.

257212955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19197.

The product of its digits is 63000, while the sum is 38.

The square root of 257212955 is about 16037.8600505180. The cubic root of 257212955 is about 635.9616775757.

The spelling of 257212955 in words is "two hundred fifty-seven million, two hundred twelve thousand, nine hundred fifty-five".