25005973 has 2 divisors, whose sum is σ = 25005974. Its totient is φ = 25005972.

The previous prime is 25005947. The next prime is 25005977. The reversal of 25005973 is 37950052.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21883684 + 3122289 = 4678^2 + 1767^2 .

It is a cyclic number.

It is not a de Polignac number, because 25005973 - 2¹⁷ = 24874901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25005977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12502986 + 12502987.

It is an arithmetic number, because the mean of its divisors is an integer number (12502987).

Almost surely, 2^25005973 is an apocalyptic number.

It is an amenable number.

25005973 is a deficient number, since it is larger than the sum of its proper divisors (1).

25005973 is an equidigital number, since it uses as much as digits as its factorization.

25005973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 25005973 is about 5000.5972643275. The cubic root of 25005973 is about 292.4250588442.

The spelling of 25005973 in words is "twenty-five million, five thousand, nine hundred seventy-three".