25274881 has 2 divisors, whose sum is σ = 25274882. Its totient is φ = 25274880.

The previous prime is 25274867. The next prime is 25274891. The reversal of 25274881 is 18847252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13024881 + 12250000 = 3609^2 + 3500^2 .

It is a cyclic number.

It is not a de Polignac number, because 25274881 - 2⁹ = 25274369 is a prime.

It is a super-2 number, since 2×25274881² = 1277639219128322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25274881.

It is not a weakly prime, because it can be changed into another prime (25274831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12637440 + 12637441.

It is an arithmetic number, because the mean of its divisors is an integer number (12637441).

Almost surely, 2^25274881 is an apocalyptic number.

It is an amenable number.

25274881 is a deficient number, since it is larger than the sum of its proper divisors (1).

25274881 is an equidigital number, since it uses as much as digits as its factorization.

25274881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35840, while the sum is 37.

The square root of 25274881 is about 5027.4129530008. The cubic root of 25274881 is about 293.4695457548.

The spelling of 25274881 in words is "twenty-five million, two hundred seventy-four thousand, eight hundred eighty-one".