25145950931 has 2 divisors, whose sum is σ = 25145950932. Its totient is φ = 25145950930.

The previous prime is 25145950891. The next prime is 25145950939. The reversal of 25145950931 is 13905954152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25145950931 - 2¹⁴ = 25145934547 is a prime.

It is a super-2 number, since 2×25145950931² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25145950939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12572975465 + 12572975466.

It is an arithmetic number, because the mean of its divisors is an integer number (12572975466).

Almost surely, 2^25145950931 is an apocalyptic number.

25145950931 is a deficient number, since it is larger than the sum of its proper divisors (1).

25145950931 is an equidigital number, since it uses as much as digits as its factorization.

25145950931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243000, while the sum is 44.

The spelling of 25145950931 in words is "twenty-five billion, one hundred forty-five million, nine hundred fifty thousand, nine hundred thirty-one".