25440642230 has 16 divisors (see below), whose sum is σ = 48203322480. Its totient is φ = 9640664352.

The previous prime is 25440642221. The next prime is 25440642301. The reversal of 25440642230 is 3224604452.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66948869 + ... + 66949248.

It is an arithmetic number, because the mean of its divisors is an integer number (3012707655).

Almost surely, 2^25440642230 is an apocalyptic number.

25440642230 is a deficient number, since it is larger than the sum of its proper divisors (22762680250).

25440642230 is a wasteful number, since it uses less digits than its factorization.

25440642230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133898143.

The product of its (nonzero) digits is 46080, while the sum is 32.

The spelling of 25440642230 in words is "twenty-five billion, four hundred forty million, six hundred forty-two thousand, two hundred thirty".