2665026625 has 8 divisors (see below), whose sum is σ = 3325953384. Its totient is φ = 2132021200.

The previous prime is 2665026619. The next prime is 2665026647. The reversal of 2665026625 is 5266205662.

It can be written as a sum of positive squares in 4 ways, for example, as 1640961 + 2663385664 = 1281^2 + 51608^2 .

It is not a de Polignac number, because 2665026625 - 2¹⁷ = 2664895553 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10659982 + ... + 10660231.

It is an arithmetic number, because the mean of its divisors is an integer number (415744173).

Almost surely, 2^2665026625 is an apocalyptic number.

2665026625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2665026625 is a deficient number, since it is larger than the sum of its proper divisors (660926759).

2665026625 is an equidigital number, since it uses as much as digits as its factorization.

2665026625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21320228 (or 21320218 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 40.

The square root of 2665026625 is about 51623.8958719700. The cubic root of 2665026625 is about 1386.4382050564.

The spelling of 2665026625 in words is "two billion, six hundred sixty-five million, twenty-six thousand, six hundred twenty-five".