725161387 has 2 divisors, whose sum is σ = 725161388. Its totient is φ = 725161386.

The previous prime is 725161369. The next prime is 725161403. The reversal of 725161387 is 783161527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 725161387 - 2⁷ = 725161259 is a prime.

It is not a weakly prime, because it can be changed into another prime (725161357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362580693 + 362580694.

It is an arithmetic number, because the mean of its divisors is an integer number (362580694).

Almost surely, 2^725161387 is an apocalyptic number.

725161387 is a deficient number, since it is larger than the sum of its proper divisors (1).

725161387 is an equidigital number, since it uses as much as digits as its factorization.

725161387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 40.

The square root of 725161387 is about 26928.8207502668. The cubic root of 725161387 is about 898.4175430881.

The spelling of 725161387 in words is "seven hundred twenty-five million, one hundred sixty-one thousand, three hundred eighty-seven".