25331029 has 2 divisors, whose sum is σ = 25331030. Its totient is φ = 25331028.

The previous prime is 25331021. The next prime is 25331063. The reversal of 25331029 is 92013352.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19580625 + 5750404 = 4425^2 + 2398^2 .

It is a cyclic number.

It is not a de Polignac number, because 25331029 - 2³ = 25331021 is a prime.

It is a super-2 number, since 2×25331029² = 1283322060397682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25330994 and 25331012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25331021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12665514 + 12665515.

It is an arithmetic number, because the mean of its divisors is an integer number (12665515).

Almost surely, 2^25331029 is an apocalyptic number.

It is an amenable number.

25331029 is a deficient number, since it is larger than the sum of its proper divisors (1).

25331029 is an equidigital number, since it uses as much as digits as its factorization.

25331029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 25331029 is about 5032.9940393368. The cubic root of 25331029 is about 293.6866986581.

The spelling of 25331029 in words is "twenty-five million, three hundred thirty-one thousand, twenty-nine".