725777090 has 16 divisors (see below), whose sum is σ = 1383246072. Its totient is φ = 273233664.

The previous prime is 725777077. The next prime is 725777093. The reversal of 725777090 is 90777527.

It can be written as a sum of positive squares in 4 ways, for example, as 692795041 + 32982049 = 26321^2 + 5743^2 .

It is a super-3 number, since 3×725777090³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (725777093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2134469 + ... + 2134808.

Almost surely, 2^725777090 is an apocalyptic number.

725777090 is a deficient number, since it is larger than the sum of its proper divisors (657468982).

725777090 is a wasteful number, since it uses less digits than its factorization.

725777090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4269301.

The product of its (nonzero) digits is 216090, while the sum is 44.

The square root of 725777090 is about 26940.2503700318. The cubic root of 725777090 is about 898.6717402484.

The spelling of 725777090 in words is "seven hundred twenty-five million, seven hundred seventy-seven thousand, ninety".