25542265203242 has 16 divisors (see below), whose sum is σ = 40616180490240. Its totient is φ = 12005355165888.

The previous prime is 25542265203233. The next prime is 25542265203311. The reversal of 25542265203242 is 24230256224552.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25542265203193 and 25542265203202.

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, 454169642 + ... + 454225877.

It is an arithmetic number, because the mean of its divisors is an integer number (2538511280640).

Almost surely, 2^{25542265203242} is an apocalyptic number.

25542265203242 is a deficient number, since it is larger than the sum of its proper divisors (15073915286998).

25542265203242 is a wasteful number, since it uses less digits than its factorization.

25542265203242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908396365.

The product of its (nonzero) digits is 2304000, while the sum is 44.

The spelling of 25542265203242 in words is "twenty-five trillion, five hundred forty-two billion, two hundred sixty-five million, two hundred three thousand, two hundred forty-two".