725135966 has 4 divisors (see below), whose sum is σ = 1087703952. Its totient is φ = 362567982.

The previous prime is 725135951. The next prime is 725135977. The reversal of 725135966 is 669531527.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181283990 + ... + 181283993.

It is an arithmetic number, because the mean of its divisors is an integer number (271925988).

Almost surely, 2^725135966 is an apocalyptic number.

725135966 is a deficient number, since it is larger than the sum of its proper divisors (362567986).

725135966 is a wasteful number, since it uses less digits than its factorization.

725135966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362567985.

The product of its digits is 340200, while the sum is 44.

The square root of 725135966 is about 26928.3487425427. The cubic root of 725135966 is about 898.4070447633.

The spelling of 725135966 in words is "seven hundred twenty-five million, one hundred thirty-five thousand, nine hundred sixty-six".