725378431 has 2 divisors, whose sum is σ = 725378432. Its totient is φ = 725378430.

The previous prime is 725378413. The next prime is 725378441. The reversal of 725378431 is 134873527.

It is a happy number.

Together with previous prime (725378413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (134873527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 725378431 - 2⁵ = 725378399 is a prime.

It is a super-2 number, since 2×725378431² = 1052347736320043522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725378411) 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, 362689215 + 362689216.

It is an arithmetic number, because the mean of its divisors is an integer number (362689216).

Almost surely, 2^725378431 is an apocalyptic number.

725378431 is a deficient number, since it is larger than the sum of its proper divisors (1).

725378431 is an equidigital number, since it uses as much as digits as its factorization.

725378431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 40.

The square root of 725378431 is about 26932.8504061490. The cubic root of 725378431 is about 898.5071675908.

The spelling of 725378431 in words is "seven hundred twenty-five million, three hundred seventy-eight thousand, four hundred thirty-one".