25420477 has 2 divisors, whose sum is σ = 25420478. Its totient is φ = 25420476.

The previous prime is 25420463. The next prime is 25420511. The reversal of 25420477 is 77402452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17189316 + 8231161 = 4146^2 + 2869^2 .

It is a cyclic number.

It is not a de Polignac number, because 25420477 - 2¹⁵ = 25387709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25420427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12710238 + 12710239.

It is an arithmetic number, because the mean of its divisors is an integer number (12710239).

Almost surely, 2^25420477 is an apocalyptic number.

It is an amenable number.

25420477 is a deficient number, since it is larger than the sum of its proper divisors (1).

25420477 is an equidigital number, since it uses as much as digits as its factorization.

25420477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 25420477 is about 5041.8723704592. The cubic root of 25420477 is about 294.0319777949.

The spelling of 25420477 in words is "twenty-five million, four hundred twenty thousand, four hundred seventy-seven".