25137964441 has 2 divisors, whose sum is σ = 25137964442. Its totient is φ = 25137964440.

The previous prime is 25137964417. The next prime is 25137964487. The reversal of 25137964441 is 14446973152.

It is an a-pointer prime, because the next prime (25137964487) can be obtained adding 25137964441 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15143763600 + 9994200841 = 123060^2 + 99971^2 .

It is a cyclic number.

It is not a de Polignac number, because 25137964441 - 2²³ = 25129575833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25137964391 and 25137964400.

It is not a weakly prime, because it can be changed into another prime (25137961441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12568982220 + 12568982221.

It is an arithmetic number, because the mean of its divisors is an integer number (12568982221).

Almost surely, 2^25137964441 is an apocalyptic number.

It is an amenable number.

25137964441 is a deficient number, since it is larger than the sum of its proper divisors (1).

25137964441 is an equidigital number, since it uses as much as digits as its factorization.

25137964441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 46.

The spelling of 25137964441 in words is "twenty-five billion, one hundred thirty-seven million, nine hundred sixty-four thousand, four hundred forty-one".