30725361 has 6 divisors (see below), whose sum is σ = 44381090. Its totient is φ = 20483568.

The previous prime is 30725351. The next prime is 30725363. The reversal of 30725361 is 16352703.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 28291761 + 2433600 = 5319^2 + 1560^2 .

It is not a de Polignac number, because 30725361 - 2¹¹ = 30723313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30725363) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1706956 + ... + 1706973.

Almost surely, 2^30725361 is an apocalyptic number.

It is an amenable number.

30725361 is a deficient number, since it is larger than the sum of its proper divisors (13655729).

30725361 is a wasteful number, since it uses less digits than its factorization.

30725361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3413935 (or 3413932 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 30725361 is about 5543.0461841843. The cubic root of 30725361 is about 313.2076286413.

The spelling of 30725361 in words is "thirty million, seven hundred twenty-five thousand, three hundred sixty-one".