725757049 has 2 divisors, whose sum is σ = 725757050. Its totient is φ = 725757048.

The previous prime is 725757029. The next prime is 725757061. The reversal of 725757049 is 940757527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 651883024 + 73874025 = 25532^2 + 8595^2 .

It is a cyclic number.

It is not a de Polignac number, because 725757049 - 2⁷ = 725756921 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (725757029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362878524 + 362878525.

It is an arithmetic number, because the mean of its divisors is an integer number (362878525).

Almost surely, 2^725757049 is an apocalyptic number.

It is an amenable number.

725757049 is a deficient number, since it is larger than the sum of its proper divisors (1).

725757049 is an equidigital number, since it uses as much as digits as its factorization.

725757049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 617400, while the sum is 46.

The square root of 725757049 is about 26939.8784147219. The cubic root of 725757049 is about 898.6634684497.

The spelling of 725757049 in words is "seven hundred twenty-five million, seven hundred fifty-seven thousand, forty-nine".