657249527253 has 16 divisors (see below), whose sum is σ = 956352600576. Its totient is φ = 398185843440.

The previous prime is 657249527227. The next prime is 657249527303. The reversal of 657249527253 is 352725942756.

It is not a de Polignac number, because 657249527253 - 2¹² = 657249523157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 657249527193 and 657249527202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (657249527653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3589401 + ... + 3768062.

It is an arithmetic number, because the mean of its divisors is an integer number (59772037536).

Almost surely, 2^657249527253 is an apocalyptic number.

It is an amenable number.

657249527253 is a deficient number, since it is larger than the sum of its proper divisors (299103073323).

657249527253 is a wasteful number, since it uses less digits than its factorization.

657249527253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7360184.

The product of its digits is 31752000, while the sum is 57.

The spelling of 657249527253 in words is "six hundred fifty-seven billion, two hundred forty-nine million, five hundred twenty-seven thousand, two hundred fifty-three".