725350901 has 4 divisors (see below), whose sum is σ = 791291904. Its totient is φ = 659409900.

The previous prime is 725350867. The next prime is 725350909. The reversal of 725350901 is 109053527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 109053527 = 11 ⋅9913957.

It is a cyclic number.

It is not a de Polignac number, because 725350901 - 2⁶ = 725350837 is a prime.

It is a super-2 number, since 2×725350901² = 1052267859163023602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725350909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32970485 + ... + 32970506.

It is an arithmetic number, because the mean of its divisors is an integer number (197822976).

Almost surely, 2^725350901 is an apocalyptic number.

It is an amenable number.

725350901 is a deficient number, since it is larger than the sum of its proper divisors (65941003).

725350901 is a wasteful number, since it uses less digits than its factorization.

725350901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65941002.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 725350901 is about 26932.3393154030. The cubic root of 725350901 is about 898.4958005516.

The spelling of 725350901 in words is "seven hundred twenty-five million, three hundred fifty thousand, nine hundred one".