25221250030 has 16 divisors (see below), whose sum is σ = 45535410864. Its totient is φ = 10058019840.

The previous prime is 25221249943. The next prime is 25221250069. The reversal of 25221250030 is 3005212252.

It is a super-2 number, since 2×25221250030² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25221249983 and 25221250010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3806547 + ... + 3813166.

It is an arithmetic number, because the mean of its divisors is an integer number (2845963179).

Almost surely, 2^25221250030 is an apocalyptic number.

25221250030 is a deficient number, since it is larger than the sum of its proper divisors (20314160834).

25221250030 is a wasteful number, since it uses less digits than its factorization.

25221250030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7620051.

The product of its (nonzero) digits is 1200, while the sum is 22.

Adding to 25221250030 its reverse (3005212252), we get a palindrome (28226462282).

The spelling of 25221250030 in words is "twenty-five billion, two hundred twenty-one million, two hundred fifty thousand, thirty".