257465020 has 24 divisors (see below), whose sum is σ = 544000464. Its totient is φ = 102352896.

The previous prime is 257465009. The next prime is 257465023. The reversal of 257465020 is 20564752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257465023) 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, 36229 + ... + 42748.

It is an arithmetic number, because the mean of its divisors is an integer number (22666686).

Almost surely, 2^257465020 is an apocalyptic number.

257465020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257465020 is an abundant number, since it is smaller than the sum of its proper divisors (286535444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257465020 is a wasteful number, since it uses less digits than its factorization.

257465020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79149 (or 79147 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 257465020 is about 16045.7165623727. The cubic root of 257465020 is about 636.1693541857.

The spelling of 257465020 in words is "two hundred fifty-seven million, four hundred sixty-five thousand, twenty".