2521225741 has 4 divisors (see below), whose sum is σ = 2568796092. Its totient is φ = 2473655392.

The previous prime is 2521225739. The next prime is 2521225757. The reversal of 2521225741 is 1475221252.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1495368900 + 1025856841 = 38670^2 + 32029^2 .

It is a cyclic number.

It is not a de Polignac number, because 2521225741 - 2¹ = 2521225739 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 (2521225771) 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, 23785096 + ... + 23785201.

It is an arithmetic number, because the mean of its divisors is an integer number (642199023).

Almost surely, 2^2521225741 is an apocalyptic number.

It is an amenable number.

2521225741 is a deficient number, since it is larger than the sum of its proper divisors (47570351).

2521225741 is an equidigital number, since it uses as much as digits as its factorization.

2521225741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47570350.

The product of its digits is 11200, while the sum is 31.

The square root of 2521225741 is about 50211.8087804054. The cubic root of 2521225741 is about 1361.0390237945.

Adding to 2521225741 its reverse (1475221252), we get a palindrome (3996446993).

The spelling of 2521225741 in words is "two billion, five hundred twenty-one million, two hundred twenty-five thousand, seven hundred forty-one".