725350691 has 8 divisors (see below), whose sum is σ = 784851984. Its totient is φ = 666378720.

The previous prime is 725350673. The next prime is 725350709. The reversal of 725350691 is 196053527.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (725350673) and next prime (725350709).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 725350691 - 2²⁶ = 658241827 is a prime.

It is a super-2 number, since 2×725350691² = 1052267249868354962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725350601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129476 + ... + 134961.

It is an arithmetic number, because the mean of its divisors is an integer number (98106498).

Almost surely, 2^725350691 is an apocalyptic number.

725350691 is a deficient number, since it is larger than the sum of its proper divisors (59501293).

725350691 is a wasteful number, since it uses less digits than its factorization.

725350691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264661.

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 725350691 is about 26932.3354167439. The cubic root of 725350691 is about 898.4957138422.

The spelling of 725350691 in words is "seven hundred twenty-five million, three hundred fifty thousand, six hundred ninety-one".