25131079 has 2 divisors, whose sum is σ = 25131080. Its totient is φ = 25131078.

The previous prime is 25131047. The next prime is 25131107. The reversal of 25131079 is 97013152.

It is an a-pointer prime, because the next prime (25131107) can be obtained adding 25131079 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25131079 - 2⁵ = 25131047 is a prime.

It is a super-2 number, since 2×25131079² = 1263142263408482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25138079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12565539 + 12565540.

It is an arithmetic number, because the mean of its divisors is an integer number (12565540).

Almost surely, 2^25131079 is an apocalyptic number.

25131079 is a deficient number, since it is larger than the sum of its proper divisors (1).

25131079 is an equidigital number, since it uses as much as digits as its factorization.

25131079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 25131079 is about 5013.0907631919. The cubic root of 25131079 is about 292.9119196934.

The spelling of 25131079 in words is "twenty-five million, one hundred thirty-one thousand, seventy-nine".