425111661 has 24 divisors (see below), whose sum is σ = 665371616. Its totient is φ = 259990560.

The previous prime is 425111653. The next prime is 425111677. The reversal of 425111661 is 166111524.

It is not a de Polignac number, because 425111661 - 2³ = 425111653 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425111651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7926 + ... + 30216.

Almost surely, 2^425111661 is an apocalyptic number.

It is an amenable number.

425111661 is a deficient number, since it is larger than the sum of its proper divisors (240259955).

425111661 is a wasteful number, since it uses less digits than its factorization.

425111661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22473 (or 22470 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 425111661 is about 20618.2361272734. The cubic root of 425111661 is about 751.9131370593.

The spelling of 425111661 in words is "four hundred twenty-five million, one hundred eleven thousand, six hundred sixty-one".