25222101630 has 64 divisors (see below), whose sum is σ = 67282057728. Its totient is φ = 5999077760.

The previous prime is 25222101563. The next prime is 25222101659. The reversal of 25222101630 is 3610122252.

It is a self number, because there is not a number n which added to its sum of digits gives 25222101630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 703554 + ... + 738533.

It is an arithmetic number, because the mean of its divisors is an integer number (1051282152).

Almost surely, 2^25222101630 is an apocalyptic number.

25222101630 is an abundant number, since it is smaller than the sum of its proper divisors (42059956098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25222101630 is a wasteful number, since it uses less digits than its factorization.

25222101630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442161.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 25222101630 its reverse (3610122252), we get a palindrome (28832223882).

The spelling of 25222101630 in words is "twenty-five billion, two hundred twenty-two million, one hundred one thousand, six hundred thirty".