25603291642 has 16 divisors (see below), whose sum is σ = 39283155072. Its totient is φ = 12509755200.

The previous prime is 25603291631. The next prime is 25603291657. The reversal of 25603291642 is 24619230652.

It is a junction number, because it is equal to n+sod(n) for n = 25603291595 and 25603291604.

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, 151359 + ... + 272242.

It is an arithmetic number, because the mean of its divisors is an integer number (2455197192).

Almost surely, 2^25603291642 is an apocalyptic number.

25603291642 is a deficient number, since it is larger than the sum of its proper divisors (13679863430).

25603291642 is a wasteful number, since it uses less digits than its factorization.

25603291642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424293.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 25603291642 in words is "twenty-five billion, six hundred three million, two hundred ninety-one thousand, six hundred forty-two".