25011503149 has 2 divisors, whose sum is σ = 25011503150. Its totient is φ = 25011503148.

The previous prime is 25011503093. The next prime is 25011503171. The reversal of 25011503149 is 94130511052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23132280649 + 1879222500 = 152093^2 + 43350^2 .

It is a cyclic number.

It is not a de Polignac number, because 25011503149 - 2⁷ = 25011503021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25011503149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25011503189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12505751574 + 12505751575.

It is an arithmetic number, because the mean of its divisors is an integer number (12505751575).

Almost surely, 2^25011503149 is an apocalyptic number.

It is an amenable number.

25011503149 is a deficient number, since it is larger than the sum of its proper divisors (1).

25011503149 is an equidigital number, since it uses as much as digits as its factorization.

25011503149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 25011503149 in words is "twenty-five billion, eleven million, five hundred three thousand, one hundred forty-nine".