25289477 has 2 divisors, whose sum is σ = 25289478. Its totient is φ = 25289476.

The previous prime is 25289377. The next prime is 25289483. The reversal of 25289477 is 77498252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25060036 + 229441 = 5006^2 + 479^2 .

It is a cyclic number.

It is not a de Polignac number, because 25289477 - 2²⁰ = 24240901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25289377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12644738 + 12644739.

It is an arithmetic number, because the mean of its divisors is an integer number (12644739).

Almost surely, 2^25289477 is an apocalyptic number.

It is an amenable number.

25289477 is a deficient number, since it is larger than the sum of its proper divisors (1).

25289477 is an equidigital number, since it uses as much as digits as its factorization.

25289477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 44.

The square root of 25289477 is about 5028.8643847294. The cubic root of 25289477 is about 293.5260268279.

The spelling of 25289477 in words is "twenty-five million, two hundred eighty-nine thousand, four hundred seventy-seven".