25112897642 has 16 divisors (see below), whose sum is σ = 43100819520. Its totient is φ = 10750135968.

The previous prime is 25112897629. The next prime is 25112897669. The reversal of 25112897642 is 24679821152.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1032083 + ... + 1056134.

It is an arithmetic number, because the mean of its divisors is an integer number (2693801220).

Almost surely, 2^25112897642 is an apocalyptic number.

25112897642 is a deficient number, since it is larger than the sum of its proper divisors (17987921878).

25112897642 is a wasteful number, since it uses less digits than its factorization.

25112897642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2089085.

The product of its digits is 483840, while the sum is 47.

The spelling of 25112897642 in words is "twenty-five billion, one hundred twelve million, eight hundred ninety-seven thousand, six hundred forty-two".