25009031 has 2 divisors, whose sum is σ = 25009032. Its totient is φ = 25009030.

The previous prime is 25008961. The next prime is 25009037. The reversal of 25009031 is 13090052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25009031 - 2²² = 20814727 is a prime.

It is a super-2 number, since 2×25009031² = 1250903263117922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25008994 and 25009012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25009037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12504515 + 12504516.

It is an arithmetic number, because the mean of its divisors is an integer number (12504516).

Almost surely, 2^25009031 is an apocalyptic number.

25009031 is a deficient number, since it is larger than the sum of its proper divisors (1).

25009031 is an equidigital number, since it uses as much as digits as its factorization.

25009031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 25009031 is about 5000.9030184558. The cubic root of 25009031 is about 292.4369786548.

Adding to 25009031 its reverse (13090052), we get a palindrome (38099083).

The spelling of 25009031 in words is "twenty-five million, nine thousand, thirty-one".