725334997 has 2 divisors, whose sum is σ = 725334998. Its totient is φ = 725334996.

The previous prime is 725334947. The next prime is 725335001. The reversal of 725334997 is 799433527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 723287236 + 2047761 = 26894^2 + 1431^2 .

It is an emirp because it is prime and its reverse (799433527) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725334997 is a prime.

It is a super-2 number, since 2×725334997² = 1052221715745980018, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 725334997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725334947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362667498 + 362667499.

It is an arithmetic number, because the mean of its divisors is an integer number (362667499).

Almost surely, 2^725334997 is an apocalyptic number.

It is an amenable number.

725334997 is a deficient number, since it is larger than the sum of its proper divisors (1).

725334997 is an equidigital number, since it uses as much as digits as its factorization.

725334997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1428840, while the sum is 49.

The square root of 725334997 is about 26932.0440553627. The cubic root of 725334997 is about 898.4892337154.

The spelling of 725334997 in words is "seven hundred twenty-five million, three hundred thirty-four thousand, nine hundred ninety-seven".