2525026021 has 4 divisors (see below), whose sum is σ = 2885744032. Its totient is φ = 2164308012.

The previous prime is 2525026013. The next prime is 2525026051. The reversal of 2525026021 is 1206205252.

It is a happy number.

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 2525026021 - 2³ = 2525026013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2525026001) 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, 180358995 + ... + 180359008.

It is an arithmetic number, because the mean of its divisors is an integer number (721436008).

Almost surely, 2^2525026021 is an apocalyptic number.

It is an amenable number.

2525026021 is a deficient number, since it is larger than the sum of its proper divisors (360718011).

2525026021 is an equidigital number, since it uses as much as digits as its factorization.

2525026021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360718010.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2525026021 is about 50249.6370235647. The cubic root of 2525026021 is about 1361.7225184264.

The spelling of 2525026021 in words is "two billion, five hundred twenty-five million, twenty-six thousand, twenty-one".