25302225340 has 96 divisors (see below), whose sum is σ = 62257434624. Its totient is φ = 8457611520.

The previous prime is 25302225323. The next prime is 25302225359. The reversal of 25302225340 is 4352220352.

It is a happy number.

It is a super-2 number, since 2×25302225340² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 25302225299 and 25302225308.

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, 1723230 + ... + 1737850.

It is an arithmetic number, because the mean of its divisors is an integer number (648514944).

Almost surely, 2^25302225340 is an apocalyptic number.

25302225340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25302225340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31128717312).

25302225340 is an abundant number, since it is smaller than the sum of its proper divisors (36955209284).

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

25302225340 is a wasteful number, since it uses less digits than its factorization.

25302225340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14947 (or 14945 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 28.

Adding to 25302225340 its reverse (4352220352), we get a palindrome (29654445692).

The spelling of 25302225340 in words is "twenty-five billion, three hundred two million, two hundred twenty-five thousand, three hundred forty".