725432051 has 2 divisors, whose sum is σ = 725432052. Its totient is φ = 725432050.

The previous prime is 725432039. The next prime is 725432053. The reversal of 725432051 is 150234527.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 725432051 - 2¹⁴ = 725415667 is a prime.

Together with 725432053, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_37500563 and since 725432051 and 37500563 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (725432053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362716025 + 362716026.

It is an arithmetic number, because the mean of its divisors is an integer number (362716026).

Almost surely, 2^725432051 is an apocalyptic number.

725432051 is a deficient number, since it is larger than the sum of its proper divisors (1).

725432051 is an equidigital number, since it uses as much as digits as its factorization.

725432051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 725432051 is about 26933.8458263947. The cubic root of 725432051 is about 898.5293062728.

Adding to 725432051 its reverse (150234527), we get a palindrome (875666578).

The spelling of 725432051 in words is "seven hundred twenty-five million, four hundred thirty-two thousand, fifty-one".