25000000030 has 16 divisors (see below), whose sum is σ = 45009211104. Its totient is φ = 9997953120.

The previous prime is 25000000021. The next prime is 25000000111. The reversal of 25000000030 is 3000000052.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 24999999953 and 25000000016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204066 + ... + 302725.

It is an arithmetic number, because the mean of its divisors is an integer number (2813075694).

Almost surely, 2^25000000030 is an apocalyptic number.

25000000030 is a deficient number, since it is larger than the sum of its proper divisors (20009211074).

25000000030 is a wasteful number, since it uses less digits than its factorization.

25000000030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511731.

The product of its (nonzero) digits is 30, while the sum is 10.

Adding to 25000000030 its reverse (3000000052), we get a palindrome (28000000082).

The spelling of 25000000030 in words is "twenty-five billion, thirty", and thus it is an aban number and an uban number.