725257147 has 2 divisors, whose sum is σ = 725257148. Its totient is φ = 725257146.

The previous prime is 725257133. The next prime is 725257153. The reversal of 725257147 is 741752527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 725257147 - 2²³ = 716868539 is a prime.

It is not a weakly prime, because it can be changed into another prime (725257187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362628573 + 362628574.

It is an arithmetic number, because the mean of its divisors is an integer number (362628574).

Almost surely, 2^725257147 is an apocalyptic number.

725257147 is a deficient number, since it is larger than the sum of its proper divisors (1).

725257147 is an equidigital number, since it uses as much as digits as its factorization.

725257147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 137200, while the sum is 40.

The square root of 725257147 is about 26930.5987122455. The cubic root of 725257147 is about 898.4570877002.

The spelling of 725257147 in words is "seven hundred twenty-five million, two hundred fifty-seven thousand, one hundred forty-seven".