1292405625397 has 4 divisors (see below), whose sum is σ = 1292734569420. Its totient is φ = 1292076681376.

The previous prime is 1292405625361. The next prime is 1292405625431. The reversal of 1292405625397 is 7935265042921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 271030607236 + 1021375018161 = 520606^2 + 1010631^2 .

It is a cyclic number.

It is not a de Polignac number, because 1292405625397 - 2¹⁵ = 1292405592629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1292405625307) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 164466118 + ... + 164473975.

It is an arithmetic number, because the mean of its divisors is an integer number (323183642355).

Almost surely, 2^{1292405625397} is an apocalyptic number.

It is an amenable number.

1292405625397 is a deficient number, since it is larger than the sum of its proper divisors (328944023).

1292405625397 is an equidigital number, since it uses as much as digits as its factorization.

1292405625397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328944022.

The product of its (nonzero) digits is 8164800, while the sum is 55.

The spelling of 1292405625397 in words is "one trillion, two hundred ninety-two billion, four hundred five million, six hundred twenty-five thousand, three hundred ninety-seven".