425688949 has 16 divisors (see below), whose sum is σ = 504852480. Its totient is φ = 351353520.

The previous prime is 425688947. The next prime is 425688961. The reversal of 425688949 is 949886524.

It is not a de Polignac number, because 425688949 - 2¹ = 425688947 is a prime.

It is a super-2 number, since 2×425688949² = 362422162601449202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 425688949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425688947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11412 + ... + 31330.

It is an arithmetic number, because the mean of its divisors is an integer number (31553280).

Almost surely, 2^425688949 is an apocalyptic number.

It is an amenable number.

425688949 is a deficient number, since it is larger than the sum of its proper divisors (79163531).

425688949 is a wasteful number, since it uses less digits than its factorization.

425688949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20040.

The product of its digits is 4976640, while the sum is 55.

The square root of 425688949 is about 20632.2308294571. The cubic root of 425688949 is about 752.2533410844.

The spelling of 425688949 in words is "four hundred twenty-five million, six hundred eighty-eight thousand, nine hundred forty-nine".