725670650 has 12 divisors (see below), whose sum is σ = 1349747502. Its totient is φ = 290268240.

The previous prime is 725670643. The next prime is 725670689. The reversal of 725670650 is 56076527.

It can be written as a sum of positive squares in 3 ways, for example, as 702621049 + 23049601 = 26507^2 + 4801^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7256657 + ... + 7256756.

Almost surely, 2^725670650 is an apocalyptic number.

725670650 is a deficient number, since it is larger than the sum of its proper divisors (624076852).

725670650 is a wasteful number, since it uses less digits than its factorization.

725670650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14513425 (or 14513420 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 38.

The square root of 725670650 is about 26938.2748148429. The cubic root of 725670650 is about 898.6278060535.

The spelling of 725670650 in words is "seven hundred twenty-five million, six hundred seventy thousand, six hundred fifty".