69857133025 has 9 divisors (see below), whose sum is σ = 86624483673. Its totient is φ = 55884649200.

The previous prime is 69857132963. The next prime is 69857133043. The reversal of 69857133025 is 52033175896.

The square root of 69857133025 is 264305.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 42810849 + 69814322176 = 6543^2 + 264224^2 .

It is not a de Polignac number, because 69857133025 - 2⁷ = 69857132897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 69857133025.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1295095 + ... + 1347955.

Almost surely, 2^69857133025 is an apocalyptic number.

69857133025 is the 264305-th square number.

69857133025 is the 132153-rd centered octagonal number.

It is an amenable number.

69857133025 is a deficient number, since it is larger than the sum of its proper divisors (16767350648).

69857133025 is an frugal number, since it uses more digits than its factorization.

69857133025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105732 (or 52866 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 49.

Multiplying 69857133025 by its sum of digits (49), we get a square (3422999518225 = 1850135²).

The spelling of 69857133025 in words is "sixty-nine billion, eight hundred fifty-seven million, one hundred thirty-three thousand, twenty-five".