1425435526661 has 8 divisors (see below), whose sum is σ = 1453715083800. Its totient is φ = 1397207249152.

The previous prime is 1425435526649. The next prime is 1425435526687. The reversal of 1425435526661 is 1666255345241.

It can be written as a sum of positive squares in 4 ways, for example, as 220777816900 + 1204657709761 = 469870^2 + 1097569^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1425435526661 - 2³⁰ = 1424361784837 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 (1425435576661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12763760 + ... + 12874953.

It is an arithmetic number, because the mean of its divisors is an integer number (181714385475).

Almost surely, 2^{1425435526661} is an apocalyptic number.

It is an amenable number.

1425435526661 is a deficient number, since it is larger than the sum of its proper divisors (28279557139).

1425435526661 is a wasteful number, since it uses less digits than its factorization.

1425435526661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25639815.

The product of its digits is 5184000, while the sum is 50.

The spelling of 1425435526661 in words is "one trillion, four hundred twenty-five billion, four hundred thirty-five million, five hundred twenty-six thousand, six hundred sixty-one".