25430506434 has 24 divisors (see below), whose sum is σ = 55118524032. Its totient is φ = 8473898040.

The previous prime is 25430506421. The next prime is 25430506469. The reversal of 25430506434 is 43460503452.

25430506434 is a `hidden beast` number, since 2 + 5 + 4 + 3 + 0 + 5 + 0 + 643 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 191082 + ... + 295589.

It is an arithmetic number, because the mean of its divisors is an integer number (2296605168).

Almost surely, 2^25430506434 is an apocalyptic number.

25430506434 is an abundant number, since it is smaller than the sum of its proper divisors (29688017598).

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

25430506434 is a wasteful number, since it uses less digits than its factorization.

25430506434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489582 (or 489579 counting only the distinct ones).

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

The spelling of 25430506434 in words is "twenty-five billion, four hundred thirty million, five hundred six thousand, four hundred thirty-four".