725378501 has 2 divisors, whose sum is σ = 725378502. Its totient is φ = 725378500.

The previous prime is 725378497. The next prime is 725378581. The reversal of 725378501 is 105873527.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 377369476 + 348009025 = 19426^2 + 18655^2 .

It is a cyclic number.

It is not a de Polignac number, because 725378501 - 2² = 725378497 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725378581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362689250 + 362689251.

It is an arithmetic number, because the mean of its divisors is an integer number (362689251).

Almost surely, 2^725378501 is an apocalyptic number.

It is an amenable number.

725378501 is a deficient number, since it is larger than the sum of its proper divisors (1).

725378501 is an equidigital number, since it uses as much as digits as its factorization.

725378501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 725378501 is about 26932.8517056772. The cubic root of 725378501 is about 898.5071964932.

The spelling of 725378501 in words is "seven hundred twenty-five million, three hundred seventy-eight thousand, five hundred one".