30125641 has 12 divisors (see below), whose sum is σ = 37740612. Its totient is φ = 23835168.

The previous prime is 30125639. The next prime is 30125651. The reversal of 30125641 is 14652103.

It can be written as a sum of positive squares in 2 ways, for example, as 10055241 + 20070400 = 3171^2 + 4480^2 .

It is not a de Polignac number, because 30125641 - 2¹ = 30125639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30125651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23010 + ... + 24283.

It is an arithmetic number, because the mean of its divisors is an integer number (3145051).

Almost surely, 2^30125641 is an apocalyptic number.

It is an amenable number.

30125641 is a deficient number, since it is larger than the sum of its proper divisors (7614971).

30125641 is a wasteful number, since it uses less digits than its factorization.

30125641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47320 (or 47313 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 30125641 is about 5488.6829932143. The cubic root of 30125641 is about 311.1564195586.

Adding to 30125641 its reverse (14652103), we get a palindrome (44777744).

The spelling of 30125641 in words is "thirty million, one hundred twenty-five thousand, six hundred forty-one".