25343422506 has 32 divisors (see below), whose sum is σ = 57273278400. Its totient is φ = 8304623280.

The previous prime is 25343422501. The next prime is 25343422519. The reversal of 25343422506 is 60522434352.

25343422506 is a `hidden beast` number, since 25 + 343 + 42 + 250 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (25343422501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3974125 + ... + 3980496.

It is an arithmetic number, because the mean of its divisors is an integer number (1789789950).

Almost surely, 2^25343422506 is an apocalyptic number.

25343422506 is an abundant number, since it is smaller than the sum of its proper divisors (31929855894).

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

25343422506 is a wasteful number, since it uses less digits than its factorization.

25343422506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7954691 (or 7954685 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 25343422506 its reverse (60522434352), we get a palindrome (85865856858).

The spelling of 25343422506 in words is "twenty-five billion, three hundred forty-three million, four hundred twenty-two thousand, five hundred six".