725017187 has 2 divisors, whose sum is σ = 725017188. Its totient is φ = 725017186.

The previous prime is 725017141. The next prime is 725017199. The reversal of 725017187 is 781710527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 725017187 - 2⁶ = 725017123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 725017187.

It is not a weakly prime, because it can be changed into another prime (725017387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362508593 + 362508594.

It is an arithmetic number, because the mean of its divisors is an integer number (362508594).

Almost surely, 2^725017187 is an apocalyptic number.

725017187 is a deficient number, since it is larger than the sum of its proper divisors (1).

725017187 is an equidigital number, since it uses as much as digits as its factorization.

725017187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27440, while the sum is 38.

The square root of 725017187 is about 26926.1431883588. The cubic root of 725017187 is about 898.3579883461.

The spelling of 725017187 in words is "seven hundred twenty-five million, seventeen thousand, one hundred eighty-seven".