2525278669 has 4 divisors (see below), whose sum is σ = 2528205696. Its totient is φ = 2522351644.

The previous prime is 2525278663. The next prime is 2525278699. The reversal of 2525278669 is 9668725252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2525278669 - 2³ = 2525278661 is a prime.

It is a super-2 number, since 2×2525278669² = 12754064712212823122, 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 (2525278661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1462219 + ... + 1463944.

It is an arithmetic number, because the mean of its divisors is an integer number (632051424).

Almost surely, 2^2525278669 is an apocalyptic number.

It is an amenable number.

2525278669 is a deficient number, since it is larger than the sum of its proper divisors (2927027).

2525278669 is an equidigital number, since it uses as much as digits as its factorization.

2525278669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2927026.

The product of its digits is 3628800, while the sum is 52.

The square root of 2525278669 is about 50252.1508892903. The cubic root of 2525278669 is about 1361.7679337996.

The spelling of 2525278669 in words is "two billion, five hundred twenty-five million, two hundred seventy-eight thousand, six hundred sixty-nine".