25068537291 has 32 divisors (see below), whose sum is σ = 38788462080. Its totient is φ = 14104290816.

The previous prime is 25068537133. The next prime is 25068537301. The reversal of 25068537291 is 19273586052.

It is not a de Polignac number, because 25068537291 - 2¹⁴ = 25068520907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25068537291.

It is not an unprimeable number, because it can be changed into a prime (25068537391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5002195 + ... + 5007203.

It is an arithmetic number, because the mean of its divisors is an integer number (1212139440).

Almost surely, 2^25068537291 is an apocalyptic number.

25068537291 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

25068537291 is a deficient number, since it is larger than the sum of its proper divisors (13719924789).

25068537291 is a wasteful number, since it uses less digits than its factorization.

25068537291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8643.

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 25068537291 in words is "twenty-five billion, sixty-eight million, five hundred thirty-seven thousand, two hundred ninety-one".