725287217290 has 16 divisors (see below), whose sum is σ = 1313526300768. Its totient is φ = 288335040336.

The previous prime is 725287217267. The next prime is 725287217299. The reversal of 725287217290 is 92712782527.

725287217290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (725287217299) 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, 222479112 + ... + 222482371.

It is an arithmetic number, because the mean of its divisors is an integer number (82095393798).

Almost surely, 2^725287217290 is an apocalyptic number.

725287217290 is a deficient number, since it is larger than the sum of its proper divisors (588239083478).

725287217290 is a wasteful number, since it uses less digits than its factorization.

725287217290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444961653.

The product of its (nonzero) digits is 1975680, while the sum is 52.

The spelling of 725287217290 in words is "seven hundred twenty-five billion, two hundred eighty-seven million, two hundred seventeen thousand, two hundred ninety".