25334998509 has 16 divisors (see below), whose sum is σ = 34157153088. Its totient is φ = 16701990912.

The previous prime is 25334998489. The next prime is 25334998519. The reversal of 25334998509 is 90589943352.

It is not a de Polignac number, because 25334998509 - 2³³ = 16745063917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25334998519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107949 + ... + 249645.

It is an arithmetic number, because the mean of its divisors is an integer number (2134822068).

Almost surely, 2^25334998509 is an apocalyptic number.

It is an amenable number.

25334998509 is a deficient number, since it is larger than the sum of its proper divisors (8822154579).

25334998509 is a wasteful number, since it uses less digits than its factorization.

25334998509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142364.

The product of its (nonzero) digits is 10497600, while the sum is 57.

The spelling of 25334998509 in words is "twenty-five billion, three hundred thirty-four million, nine hundred ninety-eight thousand, five hundred nine".