25267402220 has 12 divisors (see below), whose sum is σ = 53061544704. Its totient is φ = 10106960880.

The previous prime is 25267402201. The next prime is 25267402247. The reversal of 25267402220 is 2220476252.

It is a super-2 number, since 2×25267402220² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 631685036 + ... + 631685075.

It is an arithmetic number, because the mean of its divisors is an integer number (4421795392).

Almost surely, 2^25267402220 is an apocalyptic number.

25267402220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25267402220 is an abundant number, since it is smaller than the sum of its proper divisors (27794142484).

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

25267402220 is a wasteful number, since it uses less digits than its factorization.

25267402220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263370120 (or 1263370118 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

Adding to 25267402220 its reverse (2220476252), we get a palindrome (27487878472).

The spelling of 25267402220 in words is "twenty-five billion, two hundred sixty-seven million, four hundred two thousand, two hundred twenty".