25499764967 has 8 divisors (see below), whose sum is σ = 27496538160. Its totient is φ = 23568459840.

The previous prime is 25499764951. The next prime is 25499764987. The reversal of 25499764967 is 76946799452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25499764967 - 2⁴ = 25499764951 is a prime.

It is a super-2 number, since 2×25499764967² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25499764897 and 25499764906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25499764987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16366208 + ... + 16367765.

It is an arithmetic number, because the mean of its divisors is an integer number (3437067270).

Almost surely, 2^25499764967 is an apocalyptic number.

25499764967 is a deficient number, since it is larger than the sum of its proper divisors (1996773193).

25499764967 is a wasteful number, since it uses less digits than its factorization.

25499764967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32734033.

The product of its digits is 205752960, while the sum is 68.

The spelling of 25499764967 in words is "twenty-five billion, four hundred ninety-nine million, seven hundred sixty-four thousand, nine hundred sixty-seven".