425166687 has 24 divisors (see below), whose sum is σ = 672946560. Its totient is φ = 256528080.

The previous prime is 425166649. The next prime is 425166701. The reversal of 425166687 is 786661524.

It is not a de Polignac number, because 425166687 - 2¹¹ = 425164639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425166487) 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, 13014 + ... + 31932.

It is an arithmetic number, because the mean of its divisors is an integer number (28039440).

Almost surely, 2^425166687 is an apocalyptic number.

425166687 is a deficient number, since it is larger than the sum of its proper divisors (247779873).

425166687 is a wasteful number, since it uses less digits than its factorization.

425166687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19163 (or 19160 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 425166687 is about 20619.5704853423. The cubic root of 425166687 is about 751.9455779378.

The spelling of 425166687 in words is "four hundred twenty-five million, one hundred sixty-six thousand, six hundred eighty-seven".