257220070 has 16 divisors (see below), whose sum is σ = 463426560. Its totient is φ = 102792384.

The previous prime is 257220059. The next prime is 257220079. The reversal of 257220070 is 70022752.

257220070 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257220079) 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, 102 + ... + 22681.

It is an arithmetic number, because the mean of its divisors is an integer number (28964160).

Almost surely, 2^257220070 is an apocalyptic number.

257220070 is a deficient number, since it is larger than the sum of its proper divisors (206206490).

257220070 is a wasteful number, since it uses less digits than its factorization.

257220070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23919.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 257220070 is about 16038.0818678544. The cubic root of 257220070 is about 635.9675414918.

The spelling of 257220070 in words is "two hundred fifty-seven million, two hundred twenty thousand, seventy".