25034140321 has 2 divisors, whose sum is σ = 25034140322. Its totient is φ = 25034140320.

The previous prime is 25034140297. The next prime is 25034140379. The reversal of 25034140321 is 12304143052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13763982400 + 11270157921 = 117320^2 + 106161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25034140321 is a prime.

It is a super-2 number, since 2×25034140321² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25034140121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12517070160 + 12517070161.

It is an arithmetic number, because the mean of its divisors is an integer number (12517070161).

Almost surely, 2^25034140321 is an apocalyptic number.

It is an amenable number.

25034140321 is a deficient number, since it is larger than the sum of its proper divisors (1).

25034140321 is an equidigital number, since it uses as much as digits as its factorization.

25034140321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 25034140321 its reverse (12304143052), we get a palindrome (37338283373).

The spelling of 25034140321 in words is "twenty-five billion, thirty-four million, one hundred forty thousand, three hundred twenty-one".