257532445 has 16 divisors (see below), whose sum is σ = 313777152. Its totient is φ = 202890240.

The previous prime is 257532433. The next prime is 257532487. The reversal of 257532445 is 544235752.

It is not a de Polignac number, because 257532445 - 2⁹ = 257531933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98100 + ... + 100690.

It is an arithmetic number, because the mean of its divisors is an integer number (19611072).

Almost surely, 2^257532445 is an apocalyptic number.

It is an amenable number.

257532445 is a deficient number, since it is larger than the sum of its proper divisors (56244707).

257532445 is a wasteful number, since it uses less digits than its factorization.

257532445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2892.

The product of its digits is 168000, while the sum is 37.

The square root of 257532445 is about 16047.8174528501. The cubic root of 257532445 is about 636.2248827321.

The spelling of 257532445 in words is "two hundred fifty-seven million, five hundred thirty-two thousand, four hundred forty-five".