1925466605261 has 2 divisors, whose sum is σ = 1925466605262. Its totient is φ = 1925466605260.

The previous prime is 1925466605243. The next prime is 1925466605263. The reversal of 1925466605261 is 1625066645291.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1916546747236 + 8919858025 = 1384394^2 + 94445^2 .

It is a cyclic number.

It is not a de Polignac number, because 1925466605261 - 2²² = 1925462410957 is a prime.

Together with 1925466605263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1925466605263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 962733302630 + 962733302631.

It is an arithmetic number, because the mean of its divisors is an integer number (962733302631).

Almost surely, 2^{1925466605261} is an apocalyptic number.

It is an amenable number.

1925466605261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1925466605261 is an equidigital number, since it uses as much as digits as its factorization.

1925466605261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4665600, while the sum is 53.

The spelling of 1925466605261 in words is "one trillion, nine hundred twenty-five billion, four hundred sixty-six million, six hundred five thousand, two hundred sixty-one".