725570887 has 2 divisors, whose sum is σ = 725570888. Its totient is φ = 725570886.

The previous prime is 725570869. The next prime is 725570893. The reversal of 725570887 is 788075527.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 725570887 - 2⁷ = 725570759 is a prime.

It is a super-2 number, since 2×725570887² = 1052906224123933538, 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 725570887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725570827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362785443 + 362785444.

It is an arithmetic number, because the mean of its divisors is an integer number (362785444).

Almost surely, 2^725570887 is an apocalyptic number.

725570887 is a deficient number, since it is larger than the sum of its proper divisors (1).

725570887 is an equidigital number, since it uses as much as digits as its factorization.

725570887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1097600, while the sum is 49.

The square root of 725570887 is about 26936.4230550383. The cubic root of 725570887 is about 898.5866239578.

The spelling of 725570887 in words is "seven hundred twenty-five million, five hundred seventy thousand, eight hundred eighty-seven".