4069802025 has 27 divisors (see below), whose sum is σ = 7291181989. Its totient is φ = 2170050720.

The previous prime is 4069802017. The next prime is 4069802027. The reversal of 4069802025 is 5202089604.

It is a happy number.

The square root of 4069802025 is 63795.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1299674601 + 2770127424 = 36051^2 + 52632^2 .

It is not a de Polignac number, because 4069802025 - 2³ = 4069802017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4069802027) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 954799 + ... + 959051.

Almost surely, 2^4069802025 is an apocalyptic number.

4069802025 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4069802025 is the 63795-th square number.

4069802025 is the 31898-th centered octagonal number.

It is an amenable number.

4069802025 is a deficient number, since it is larger than the sum of its proper divisors (3221379964).

4069802025 is an frugal number, since it uses more digits than its factorization.

4069802025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8522 (or 4261 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The cubic root of 4069802025 is about 1596.5815067301.

Multiplying 4069802025 by its sum of digits (36), we get a square (146512872900 = 382770²).

The spelling of 4069802025 in words is "four billion, sixty-nine million, eight hundred two thousand, twenty-five".