25130220501541 has 4 divisors (see below), whose sum is σ = 25135935816492. Its totient is φ = 25124505186592.

The previous prime is 25130220501539. The next prime is 25130220501619. The reversal of 25130220501541 is 14510502203152.

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 12481912350625 + 12648308150916 = 3532975^2 + 3556446^2 .

It is a cyclic number.

It is not a de Polignac number, because 25130220501541 - 2¹ = 25130220501539 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 (25130220501041) 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, 2857650880 + ... + 2857659673.

It is an arithmetic number, because the mean of its divisors is an integer number (6283983954123).

Almost surely, 2^{25130220501541} is an apocalyptic number.

It is an amenable number.

25130220501541 is a deficient number, since it is larger than the sum of its proper divisors (5715314951).

25130220501541 is an equidigital number, since it uses as much as digits as its factorization.

25130220501541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5715314950.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 25130220501541 its reverse (14510502203152), we get a palindrome (39640722704693).

The spelling of 25130220501541 in words is "twenty-five trillion, one hundred thirty billion, two hundred twenty million, five hundred one thousand, five hundred forty-one".