25131011 has 2 divisors, whose sum is σ = 25131012. Its totient is φ = 25131010.

The previous prime is 25130999. The next prime is 25131017. The reversal of 25131011 is 11013152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25131011 - 2¹⁸ = 24868867 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25131017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12565505 + 12565506.

It is an arithmetic number, because the mean of its divisors is an integer number (12565506).

Almost surely, 2^25131011 is an apocalyptic number.

25131011 is a deficient number, since it is larger than the sum of its proper divisors (1).

25131011 is an equidigital number, since it uses as much as digits as its factorization.

25131011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 25131011 is about 5013.0839809443. The cubic root of 25131011 is about 292.9116555049.

Adding to 25131011 its reverse (11013152), we get a palindrome (36144163).

The spelling of 25131011 in words is "twenty-five million, one hundred thirty-one thousand, eleven".