25150136381 has 2 divisors, whose sum is σ = 25150136382. Its totient is φ = 25150136380.

The previous prime is 25150136371. The next prime is 25150136443. The reversal of 25150136381 is 18363105152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19351313881 + 5798822500 = 139109^2 + 76150^2 .

It is a cyclic number.

It is not a de Polignac number, because 25150136381 - 2⁶ = 25150136317 is a prime.

It is a super-2 number, since 2×25150136381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25150136371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12575068190 + 12575068191.

It is an arithmetic number, because the mean of its divisors is an integer number (12575068191).

Almost surely, 2^25150136381 is an apocalyptic number.

It is an amenable number.

25150136381 is a deficient number, since it is larger than the sum of its proper divisors (1).

25150136381 is an equidigital number, since it uses as much as digits as its factorization.

25150136381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 25150136381 in words is "twenty-five billion, one hundred fifty million, one hundred thirty-six thousand, three hundred eighty-one".