2525265421 has 12 divisors (see below), whose sum is σ = 2977798332. Its totient is φ = 2134859328.

The previous prime is 2525265389. The next prime is 2525265437. The reversal of 2525265421 is 1245625252.

It can be written as a sum of positive squares in 2 ways, for example, as 1533897225 + 991368196 = 39165^2 + 31486^2 .

It is not a de Polignac number, because 2525265421 - 2⁵ = 2525265389 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 (2525260421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 349410 + ... + 356563.

It is an arithmetic number, because the mean of its divisors is an integer number (248149861).

Almost surely, 2^2525265421 is an apocalyptic number.

It is an amenable number.

2525265421 is a deficient number, since it is larger than the sum of its proper divisors (452532911).

2525265421 is an equidigital number, since it uses as much as digits as its factorization.

2525265421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706060 (or 706053 counting only the distinct ones).

The product of its digits is 48000, while the sum is 34.

The square root of 2525265421 is about 50252.0190738641. The cubic root of 2525265421 is about 1361.7655524475.

The spelling of 2525265421 in words is "two billion, five hundred twenty-five million, two hundred sixty-five thousand, four hundred twenty-one".