669525235 has 16 divisors (see below), whose sum is σ = 812657664. Its totient is φ = 529487712.

The previous prime is 669525223. The next prime is 669525247. The reversal of 669525235 is 532525966.

It is an interprime number because it is at equal distance from previous prime (669525223) and next prime (669525247).

It is a cyclic number.

It is not a de Polignac number, because 669525235 - 2⁷ = 669525107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 669525191 and 669525200.

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, 546834 + ... + 548056.

It is an arithmetic number, because the mean of its divisors is an integer number (50791104).

Almost surely, 2^669525235 is an apocalyptic number.

669525235 is a deficient number, since it is larger than the sum of its proper divisors (143132429).

669525235 is a wasteful number, since it uses less digits than its factorization.

669525235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2394.

The product of its digits is 486000, while the sum is 43.

The square root of 669525235 is about 25875.1856998167. The cubic root of 669525235 is about 874.8272791052.

The spelling of 669525235 in words is "six hundred sixty-nine million, five hundred twenty-five thousand, two hundred thirty-five".