725225461 has 2 divisors, whose sum is σ = 725225462. Its totient is φ = 725225460.

The previous prime is 725225441. The next prime is 725225467. The reversal of 725225461 is 164522527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 724632561 + 592900 = 26919^2 + 770^2 .

It is a cyclic number.

It is not a de Polignac number, because 725225461 - 2⁵ = 725225429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725225467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362612730 + 362612731.

It is an arithmetic number, because the mean of its divisors is an integer number (362612731).

Almost surely, 2^725225461 is an apocalyptic number.

It is an amenable number.

725225461 is a deficient number, since it is larger than the sum of its proper divisors (1).

725225461 is an equidigital number, since it uses as much as digits as its factorization.

725225461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33600, while the sum is 34.

The square root of 725225461 is about 26930.0104158910. The cubic root of 725225461 is about 898.4440031797. Note that the first 3 decimals are identical.

Adding to 725225461 its reverse (164522527), we get a palindrome (889747988).

The spelling of 725225461 in words is "seven hundred twenty-five million, two hundred twenty-five thousand, four hundred sixty-one".