257025022 has 4 divisors (see below), whose sum is σ = 385537536. Its totient is φ = 128512510.

The previous prime is 257025019. The next prime is 257025029. The reversal of 257025022 is 220520752.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257025029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64256254 + ... + 64256257.

It is an arithmetic number, because the mean of its divisors is an integer number (96384384).

Almost surely, 2^257025022 is an apocalyptic number.

257025022 is a deficient number, since it is larger than the sum of its proper divisors (128512514).

257025022 is a wasteful number, since it uses less digits than its factorization.

257025022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128512513.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 257025022 is about 16031.9999376248. Note that the first 4 decimals coincide. The cubic root of 257025022 is about 635.8067510784.

Adding to 257025022 its reverse (220520752), we get a palindrome (477545774).

The spelling of 257025022 in words is "two hundred fifty-seven million, twenty-five thousand, twenty-two".