26400250125 has 24 divisors (see below), whose sum is σ = 47590852920. Its totient is φ = 14080132800.

The previous prime is 26400250117. The next prime is 26400250133. The reversal of 26400250125 is 52105200462.

26400250125 is a `hidden beast` number, since 2 + 6 + 400 + 250 + 1 + 2 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (26400250117) and next prime (26400250133).

It can be written as a sum of positive squares in 4 ways, for example, as 134861769 + 26265388356 = 11613^2 + 162066^2 .

It is not a de Polignac number, because 26400250125 - 2³ = 26400250117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11732320 + ... + 11734569.

It is an arithmetic number, because the mean of its divisors is an integer number (1982952205).

Almost surely, 2^26400250125 is an apocalyptic number.

26400250125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

26400250125 is a deficient number, since it is larger than the sum of its proper divisors (21190602795).

26400250125 is a wasteful number, since it uses less digits than its factorization.

26400250125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23466910 (or 23466897 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 26400250125 its reverse (52105200462), we get a palindrome (78505450587).

The spelling of 26400250125 in words is "twenty-six billion, four hundred million, two hundred fifty thousand, one hundred twenty-five".