1325251251405 has 96 divisors (see below), whose sum is σ = 2442027294720. Its totient is φ = 662548623360.

The previous prime is 1325251251383. The next prime is 1325251251427. The reversal of 1325251251405 is 5041521525231.

1325251251405 is a `hidden beast` number, since 1 + 3 + 2 + 52 + 512 + 51 + 40 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1325251251383) and next prime (1325251251427).

It is not a de Polignac number, because 1325251251405 - 2⁷ = 1325251251277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1325251251405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 237030160 + ... + 237035750.

It is an arithmetic number, because the mean of its divisors is an integer number (25437784320).

Almost surely, 2^{1325251251405} is an apocalyptic number.

1325251251405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1325251251405 is a deficient number, since it is larger than the sum of its proper divisors (1116776043315).

1325251251405 is a wasteful number, since it uses less digits than its factorization.

1325251251405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6811 (or 6808 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

Adding to 1325251251405 its reverse (5041521525231), we get a palindrome (6366772776636).

The spelling of 1325251251405 in words is "one trillion, three hundred twenty-five billion, two hundred fifty-one million, two hundred fifty-one thousand, four hundred five".