25320426999 has 8 divisors (see below), whose sum is σ = 38583507840. Its totient is φ = 14468815416.

The previous prime is 25320426979. The next prime is 25320427001. The reversal of 25320426999 is 99962402352.

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

It is not a de Polignac number, because 25320426999 - 2¹⁹ = 25319902711 is a prime.

It is a super-2 number, since 2×25320426999² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25320426979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 602867289 + ... + 602867330.

It is an arithmetic number, because the mean of its divisors is an integer number (4822938480).

Almost surely, 2^25320426999 is an apocalyptic number.

25320426999 is a deficient number, since it is larger than the sum of its proper divisors (13263080841).

25320426999 is a wasteful number, since it uses less digits than its factorization.

25320426999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205734629.

The product of its (nonzero) digits is 2099520, while the sum is 51.

The spelling of 25320426999 in words is "twenty-five billion, three hundred twenty million, four hundred twenty-six thousand, nine hundred ninety-nine".