25343999989 has 32 divisors (see below), whose sum is σ = 32992137216. Its totient is φ = 18878133120.

The previous prime is 25343999983. The next prime is 25344000013. The reversal of 25343999989 is 98999934352.

It is not a de Polignac number, because 25343999989 - 2¹⁹ = 25343475701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25343999983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3692649 + ... + 3699505.

It is an arithmetic number, because the mean of its divisors is an integer number (1031004288).

Almost surely, 2^25343999989 is an apocalyptic number.

It is an amenable number.

25343999989 is a deficient number, since it is larger than the sum of its proper divisors (7648137227).

25343999989 is a wasteful number, since it uses less digits than its factorization.

25343999989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8985.

The product of its digits is 170061120, while the sum is 70.

The spelling of 25343999989 in words is "twenty-five billion, three hundred forty-three million, nine hundred ninety-nine thousand, nine hundred eighty-nine".