25028977 has 2 divisors, whose sum is σ = 25028978. Its totient is φ = 25028976.

The previous prime is 25028963. The next prime is 25029019. The reversal of 25028977 is 77982052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13133376 + 11895601 = 3624^2 + 3449^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25028977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25028917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12514488 + 12514489.

It is an arithmetic number, because the mean of its divisors is an integer number (12514489).

Almost surely, 2^25028977 is an apocalyptic number.

It is an amenable number.

25028977 is a deficient number, since it is larger than the sum of its proper divisors (1).

25028977 is an equidigital number, since it uses as much as digits as its factorization.

25028977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 25028977 is about 5002.8968608197. The cubic root of 25028977 is about 292.5147025507.

The spelling of 25028977 in words is "twenty-five million, twenty-eight thousand, nine hundred seventy-seven".