1625261737123 has 2 divisors, whose sum is σ = 1625261737124. Its totient is φ = 1625261737122.

The previous prime is 1625261737091. The next prime is 1625261737157. The reversal of 1625261737123 is 3217371625261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1625261737123 - 2⁵ = 1625261737091 is a prime.

It is not a weakly prime, because it can be changed into another prime (1625261738123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 812630868561 + 812630868562.

It is an arithmetic number, because the mean of its divisors is an integer number (812630868562).

Almost surely, 2^{1625261737123} is an apocalyptic number.

1625261737123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1625261737123 is an equidigital number, since it uses as much as digits as its factorization.

1625261737123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 46.

The spelling of 1625261737123 in words is "one trillion, six hundred twenty-five billion, two hundred sixty-one million, seven hundred thirty-seven thousand, one hundred twenty-three".