30725697 has 4 divisors (see below), whose sum is σ = 40967600. Its totient is φ = 20483796.

The previous prime is 30725659. The next prime is 30725699. The reversal of 30725697 is 79652703.

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.

It is not a de Polignac number, because 30725697 - 2⁶ = 30725633 is a prime.

It is a super-2 number, since 2×30725697² = 1888136912271618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30725699) 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, 5120947 + ... + 5120952.

It is an arithmetic number, because the mean of its divisors is an integer number (10241900).

Almost surely, 2^30725697 is an apocalyptic number.

It is an amenable number.

30725697 is a deficient number, since it is larger than the sum of its proper divisors (10241903).

30725697 is a wasteful number, since it uses less digits than its factorization.

30725697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10241902.

The product of its (nonzero) digits is 79380, while the sum is 39.

The square root of 30725697 is about 5543.0764923461. The cubic root of 30725697 is about 313.2087703407.

The spelling of 30725697 in words is "thirty million, seven hundred twenty-five thousand, six hundred ninety-seven".