25501374629 has 2 divisors, whose sum is σ = 25501374630. Its totient is φ = 25501374628.

The previous prime is 25501374623. The next prime is 25501374641. The reversal of 25501374629 is 92647310552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23756056900 + 1745317729 = 154130^2 + 41777^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25501374629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25501374629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25501374623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12750687314 + 12750687315.

It is an arithmetic number, because the mean of its divisors is an integer number (12750687315).

Almost surely, 2^25501374629 is an apocalyptic number.

It is an amenable number.

25501374629 is a deficient number, since it is larger than the sum of its proper divisors (1).

25501374629 is an equidigital number, since it uses as much as digits as its factorization.

25501374629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 25501374629 in words is "twenty-five billion, five hundred one million, three hundred seventy-four thousand, six hundred twenty-nine".