425169669 has 16 divisors (see below), whose sum is σ = 599744000. Its totient is φ = 267171696.

The previous prime is 425169623. The next prime is 425169673. The reversal of 425169669 is 966961524.

It is not a de Polignac number, because 425169669 - 2⁸ = 425169413 is a prime.

It is a super-2 number, since 2×425169669² = 361538494875139122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425161669) 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, 7399 + ... + 30084.

It is an arithmetic number, because the mean of its divisors is an integer number (37484000).

Almost surely, 2^425169669 is an apocalyptic number.

It is an amenable number.

425169669 is a deficient number, since it is larger than the sum of its proper divisors (174574331).

425169669 is a wasteful number, since it uses less digits than its factorization.

425169669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37704.

The product of its digits is 699840, while the sum is 48.

The square root of 425169669 is about 20619.6427951602. The cubic root of 425169669 is about 751.9473359122.

It can be divided in two parts, 4251 and 69669, that added together give a triangular number (73920 = T₃₈₄).

The spelling of 425169669 in words is "four hundred twenty-five million, one hundred sixty-nine thousand, six hundred sixty-nine".