2661260525 has 48 divisors (see below), whose sum is σ = 4132890240. Its totient is φ = 1651449600.

The previous prime is 2661260521. The next prime is 2661260531. The reversal of 2661260525 is 5250621662.

It is not a de Polignac number, because 2661260525 - 2² = 2661260521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661260521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 437807 + ... + 443843.

It is an arithmetic number, because the mean of its divisors is an integer number (86101880).

Almost surely, 2^2661260525 is an apocalyptic number.

2661260525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2661260525 is a deficient number, since it is larger than the sum of its proper divisors (1471629715).

2661260525 is a wasteful number, since it uses less digits than its factorization.

2661260525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6294 (or 6289 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 2661260525 is about 51587.4066512361. The cubic root of 2661260525 is about 1385.7848124048.

The spelling of 2661260525 in words is "two billion, six hundred sixty-one million, two hundred sixty thousand, five hundred twenty-five".