257475454146 has 48 divisors (see below), whose sum is σ = 578011317624. Its totient is φ = 82766541312.

The previous prime is 257475454139. The next prime is 257475454147. The reversal of 257475454146 is 641454574752.

257475454146 is a `hidden beast` number, since 2 + 5 + 7 + 4 + 7 + 54 + 541 + 46 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 194250866121 + 63224588025 = 440739^2 + 251445^2 .

It is a junction number, because it is equal to n+sod(n) for n = 257475454092 and 257475454101.

It is not an unprimeable number, because it can be changed into a prime (257475454147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1635361 + ... + 1785876.

Almost surely, 2^257475454146 is an apocalyptic number.

257475454146 is an abundant number, since it is smaller than the sum of its proper divisors (320535863478).

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

257475454146 is a wasteful number, since it uses less digits than its factorization.

257475454146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3421395 (or 3421392 counting only the distinct ones).

The product of its digits is 18816000, while the sum is 54.

The spelling of 257475454146 in words is "two hundred fifty-seven billion, four hundred seventy-five million, four hundred fifty-four thousand, one hundred forty-six".