725247407 has 2 divisors, whose sum is σ = 725247408. Its totient is φ = 725247406.

The previous prime is 725247379. The next prime is 725247451. The reversal of 725247407 is 704742527.

It is a weak prime.

It is an emirp because it is prime and its reverse (704742527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 725247407 - 2⁸ = 725247151 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725247007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362623703 + 362623704.

It is an arithmetic number, because the mean of its divisors is an integer number (362623704).

Almost surely, 2^725247407 is an apocalyptic number.

725247407 is a deficient number, since it is larger than the sum of its proper divisors (1).

725247407 is an equidigital number, since it uses as much as digits as its factorization.

725247407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 109760, while the sum is 38.

The square root of 725247407 is about 26930.4178764460. The cubic root of 725247407 is about 898.4530656733.

It can be divided in two parts, 72524740 and 7, that multiplied together give a triangular number (507673180 = T₃₁₈₆₄).

The spelling of 725247407 in words is "seven hundred twenty-five million, two hundred forty-seven thousand, four hundred seven".